by Susan Flantzer
© Unofficial Royalty 2024

Wales was divided into a number of separate kingdoms. The largest of these was Gwynedd in northwest Wales and Powys in east Wales. Gwynedd was the most powerful of the Welsh kingdoms. For one man to rule all of Wales during this period was rare. This was because of the inheritance system practiced in Wales. All sons received an equal share of their father’s property, including illegitimate sons, resulting in the division of territories.

The Principality of Wales was created in 1216 at the Council of Aberdyfi when it was agreed by Llywelyn the Great and the other Welsh princes that he was the paramount Welsh ruler and the other Welsh princes would pay homage to him. Although he never used the title, Llywelyn was the de facto Prince of Wales. Llywelyn dominated Wales for 45 years and was one of only two Welsh rulers to be called “the Great”, the other being his ancestor Rhodri the Great. Llywelyn was succeeded by his son Dafydd ap Llywelyn and then by his two grandsons who were the sons of his illegitimate son Gruffydd ap Llywelyn.

The campaign of King Edward I of England in Wales (1276 – 1284) resulted in Wales being completely taken over by England. It ended with the deaths of the last two native Princes of Wales: Llywelyn ap Gruffudd who was ambushed and killed in 1282 and his brother Dafydd ap Gruffydd, who was the first prominent person in recorded history to have been hanged, drawn, and quartered, in 1283. To ensure there would be no further members of the House of Aberffraw, the English imprisoned Dafydd ap Gruffydd’s two young sons for the rest of their lives at Bristol Castle and sent his daughter and the daughter of his brother Llywelyn ap Gruffydd to convents. To further humiliate the Welsh, King Edward I invested his son and heir, the future King Edward II, with the title Prince of Wales. Since then, the title has been granted (with a few exceptions) to the heir apparent of the English or British monarch.

• Unofficial Royalty: Principality of Wales Index

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Alexander III, King of Scots (on the left) with Llywelyn, Prince of Wales (on the right) as guests of King Edward I of England (in the middle) at the sitting of an English parliament; Credit – Wikipedia

Note: In Welsh, “ap” means “son of” and “ferch” means “daughter of”.

Llywelyn ap Gruffydd, also known as Llywelyn the Last, was born circa April 1228 in the Principality of Gwynedd, now in Wales. He was the second son of Gruffydd ap Llywelyn and Senana ferch Caradog. Llewelyn’s paternal grandparents were Llywelyn ap Iorwerth, Prince of Gwynedd, also known as Llywelyn Fawr (Llywelyn the Great), and his mistress Tangwystl ferch Llywarch Goch. His maternal grandparents were Caradog ap Membyr Ddu and Eva ferch Gwyn.

Llywelyn had three brothers and three sisters. Information on his siblings is sketchy, including birth and death dates and marriage information.

• Margred ferch Gruffydd (1221 – 1261), married Madog II ap Gruffydd, Lord of Dinas Branof Powys Fadog, had two sons
• Owain Goch ap Gruffydd (circa 1225 – circa 1282)
• Rhodri ap Gruffydd (circa 1230 – 1235 to circa 1315), married (1) Beatrice, daughter of David of Malpas (2) Unknown, had one son
• Dafydd ap Gruffydd, Prince of Gwynedd (1238 – 1283), married Elizabeth Ferrers, had two sons and one daughter
• Gwladys ferch Gruffydd (circa 1225 – 1261), half-sister, married Rhys Fychan
• Catrin ferch Gruffydd (circa 1234 – ?), a half-sister, married Iorwerth Fychan ab Iorwerth Hen, had two children

Llywelyn ap Gruffydd’s father Gruffydd ap Llywelyn was the eldest son of Llywelyn the Great. Even though Gruffydd ap Llywelyn was illegitimate, according to Welsh law, all sons received an equal share of their father’s property, including illegitimate sons, resulting in the division of assets. However, Llywelyn the Great wanted his legitimate son Dafydd ap Llywelyn, the son of Llywelyn the Great’s wife Joan, Lady of Wales, an illegitimate daughter of King John of England, to be his sole heir. In 1220, Llywelyn the Great managed to convince Dafydd ap Llywelyn’s maternal uncle King Henry III of England to recognize Dafydd as his sole heir, and in 1226, Pope Honorius III officially declared Llywelyn the Great’s wife Joan to be the legitimate daughter of King John of England, strengthening Dafydd’s position. In 1238, at a council at Ystrad Fflur Abbey, the other Welsh princes recognized Dafydd as Llywelyn’s sole legitimate heir.

Llywelyn the Great on his deathbed with his sons Gruffydd ap Llywelyn and Dafydd ap Llywelyn; Credit – Wikipedia

On April 11, 1240, Llywelyn the Great died and his son Dafydd ap Llywelyn succeeded him as Prince of Gwynedd. In August 1241, King Henry III of England invaded Gwynedd. After a short war, under the Treaty of Gwerneigron, Dafydd ap Llywelyn was forced to give up all his lands outside Gwynedd and hand over his imprisoned half-brother Gruffydd ap Llywelyn, Llywelyn ap Gruffydd’s father, to King Henry III who imprisoned him in the Tower of London. Since Gruffydd ap Llywelyn was a rival claimant to the Principality of Gwynedd, King Henry III put limits on Dafydd ap Llywelyn by threatening to set up Gruffydd as a rival in Gwynedd. However, on March 1, 1244, Llywelyn ap Gruffydd’s father Gruffydd ap Llywelyn fell to his death while trying to escape from the Tower of London by climbing down a knotted bedsheet.

Gruffydd ap Llywelyn falling from the Tower of London; Credit – Wikipedia

Dafydd ap Llywelyn, Prince of Gwynedd and his wife Isabella de Braose had no children. Llywelyn ap Gruffydd was in the entourage of his uncle Dafydd ap Llywelyn and appeared to be his designated heir. However, shortly after Dafydd ap Llywelyn died in 1246, the 1247 Treaty of Woodstock divided Gwynedd between Llywelyn ap Gruffydd, his elder brother Owain ap Gruffydd, and his younger brothers Rhodri ap Gruffydd and Dafydd ap Gruffydd. In 1255, Llywelyn ap Gruffydd defeated his brothers at the Battle of Bryn Derwin and established himself as the sole ruler of Gwynedd. He received the homage of the Welsh princes and assumed the title Prince of Wales. King Henry III of England eventually recognized Llywelyn ap Gruffydd as Prince of Wales in 1267.

Eleonor de Montfort, wife of Llywelyn ap Gruffydd; Credit – Wikipedia

In 1265, a marriage contract had been concluded for a marriage with Eleonor de Montfort, the daughter of Simon de Montfort, 6th Earl of Leicester and Eleonor of England, the youngest of the five children of King John of England and Isabella of Angoulême. In 1275, Llywelyn ap Gruffudd, Prince of Wales and Eleanor de Montfort were married by proxy. While making her way from France to Wales by ship, Eleonor was captured by agents of her first cousin King Edward I of England. She was held prisoner at Windsor Castle for nearly three years and was finally released in 1278 following the signing of the Treaty of Aberconwy between King Edward I of England and Llywelyn ap Gruffydd, Prince of Wales.

On October 13, 1278, the feast day of Saint Edward the Confessor, King of England, Llywelyn ap Gruffydd, Prince of Wales and Eleonor de Monfort were married in person at Worcester Cathedral in England with King Edward I giving the bride away and paying for the wedding feast. Llywelyn ap Gruffydd and Eleonor had one child, a daughter Gwenllian ferch Llywelyn, also known as Gwenllian of Wales, born at the Palace of Aber Garth Celyn in Gwynedd, Wales. Sadly, Eleonor died due to childbirth complications on June 19, 1282, aged 29 – 30. She was buried at Llanfaes Friary in Llanfaes, Anglesey, Wales which had been founded by Llywelyn the Great, the grandfather of Llywelyn ap Gruffudd, in memory of his wife Joan, Eleanor’s aunt.

Monument to Llywelyn ap Gruffydd, Prince of Wales in Cilmery, Wales near where he was killed; Credit – By Philip Halling, CC BY-SA 2.0, https://commons.wikimedia.org/w/index.php?curid=11285019

Within nineteen months of Gwenllian’s birth, her father Llywelyn ap Gruffydd and her uncle Dafydd ap Gruffydd were put to death by the English army under King Edward I of England. On December 11, 1282, at the Battle of Orewin Bridge near Builth Wells, Wales, Llywelyn ap Gruffydd, Prince of Wales was one of 3,000 Welshmen killed that day. He was ambushed, horribly murdered, and beheaded. His head was sent to London for public display, and it is thought that the rest of his body was interred at Cwmhir Abbey in Abbeycwmhir, Wales.

Llywelyn ap Gruffydd’s brother Dafydd ap Gruffydd was Prince of Wales from December 11, 1282, until his execution on October 3, 1283, on the orders of King Edward I of England. Dafydd was dragged through the streets of Shrewsbury, England attached to a horse’s tail, then hanged alive, revived, then disemboweled and his entrails burned before him. He was then beheaded and his body was cut into four quarters. Dafydd ap Gruffydd was the first prominent person in recorded history to have been hanged, drawn, and quartered. His head was placed on a pole in the Tower of London near the head of his brother Llywelyn. The days of an independent Wales were over. King Edward I of England had completed a conquest of Wales that resulted in his annexation of the Principality of Wales.

King Edward I of England wanted to make sure that there were no more claimants to the Welsh throne. Llywelyn ap Gruffydd’s infant daughter Gwenllian ferch Llywelyn and Dafydd ap Gruffydd’s young daughter Gwladys ferch Dafydd were confined for life in remote convents in Lincolnshire, England, and never allowed freedom. Gwenllian died in 1337 and Gwladys died circa 1336. Dafydd ap Gruffydd’s two young sons 15-year-old Llywelyn ap Dafydd and 7-year-old Owain ap Dafydd were imprisoned for the rest of their lives at Bristol Castle in England. Much of the time they were kept in cages. Llywelyn died in 1287 while Owain was last reported to be alive in 1325 when he would have been in his fifties.

This article is the intellectual property of Unofficial Royalty and is NOT TO BE COPIED, EDITED, OR POSTED IN ANY FORM ON ANOTHER WEBSITE under any circumstances. It is permissible to use a link that directs to Unofficial Royalty.

Works Cited

• Flantzer, Susan. (2023). Dafydd ap Llywelyn, Prince of Gwynedd. Unofficial Royalty. https://www.unofficialroyalty.com/dafydd-ap-llywelyn-prince-of-gwynedd/
• Gruffydd ap Llywelyn Fawr. geni_family_tree. (2022). https://www.geni.com/people/Gruffydd-ap-Llywelyn-Fawr/6000000006727931003
• Wikimedia Foundation. (2023). Gruffudd ap Llywelyn ap Iorwerth. Wikipedia. https://en.wikipedia.org/wiki/Gruffudd_ap_Llywelyn_ap_Iorwerth
• Wikimedia Foundation. (2023). Llywelyn ap Gruffudd. Wikipedia. https://en.wikipedia.org/wiki/Llywelyn_ap_Gruffudd
• Wikimedia Foundation. (2022). Llywelyn ap Gruffudd. Wikipedia (Welsh). https://cy.wikipedia.org/wiki/Llywelyn_ap_Gruffudd
• Williamson, David. (1996). Brewer’s British Royalty: A Phrase and Fable Dictionary. Cassell.

by Susan Flantzer
© Unofficial Royalty 2024

Arms of Gwynedd; Credit – By Sodacan – Own work,  https://commons.wikimedia.org/w/index.php?curid=11593007

Wales was divided into a number of separate kingdoms. The largest of these was Gwynedd in northwest Wales and Powys in east Wales. Gwynedd was the most powerful of the Welsh kingdoms. For one man to rule all of Wales during this period was rare. This was because of the inheritance system practiced in Wales. All sons received an equal share of their father’s property, including illegitimate sons, resulting in the division of territories.

Wales c. 1217: Yellow areas directly ruled by Llywelyn the Great, Grey areas ruled by Llywelyn’s client princes, Green ruled by Anglo-Norman lords; Credit – Wikipedia

The Principality of Wales was created in 1216 at the Council of Aberdyfi when it was agreed by Llywelyn the Great and the other Welsh princes that he was the paramount Welsh ruler and the other Welsh princes would pay homage to him. Although he never used the title, Llywelyn was the de facto Prince of Wales. Llywelyn dominated Wales for 45 years and was one of only two Welsh rulers to be called “the Great”, the other being his ancestor Rhodri the Great. Llywelyn was succeeded by his son Dafydd ap Llywelyn and then by his two grandsons who were the sons of his illegitimate son Gruffydd ap Llywelyn.

The campaign of King Edward I of England in Wales (1276 – 1284) resulted in Wales being completely taken over by England. It ended with the deaths of the last two native Princes of Wales: Llywelyn ap Gruffudd who was ambushed and killed in 1282 and his brother Dafydd ap Gruffydd, who was the first prominent person in recorded history to have been hanged, drawn, and quartered, in 1283. To ensure there would be no further members of the House of Aberffraw, the English imprisoned Dafydd ap Gruffydd’s two young sons for the rest of their lives at Bristol Castle and sent his daughter and the daughter of his brother Llywelyn ap Gruffydd to convents. To further humiliate the Welsh, King Edward I invested his son and heir, the future King Edward II, with the title Prince of Wales. Since then, the title has been granted (with a few exceptions) to the heir apparent of the English or British monarch.

• Unofficial Royalty: Principality of Wales Index

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(Note: In Welsh, “ap” means “son of” and “ferch” means “daughter of”)

Born circa 1222 at Bramber Castle, in Bramber, Sussex, England, Isabella de Braose was the eldest of the four daughters of William de Braose, Lord of Abergavenny, one of the most powerful barons in the Welsh Marches, and Eva Marshal, daughter of William Marshal, 1st Earl of Pembroke, who served five Kings of England – King Henry II, his sons Henry the Young King, King Richard I, and King John, and John’s son King Henry III. Isabella’s paternal grandparents were Reginald de Braose and his first wife Grecia Briwere. Her maternal grandparents were William Marshal, 1st Earl of Pembroke (served five Kings of England – King Henry II, his sons Henry the Young King, King Richard I, and King John, and John’s son King Henry III) and Isabel de Clare, 4th Countess of Pembroke in her own right (daughter of Richard de Clare, 2nd Earl of Pembroke, known to history as Strongbow).

Isabella had three younger sisters:

• Maud de Braose (circa 1224 – 1301), married Roger Mortimer, 1st Baron Wigmore, had at least six children
• Eleanor de Braose (circa 1226 – 1251), married Humphrey de Bohun, had four children
• Eva de Braose (circa 1227 – 1255), married William de Cantelou, Baron of Eaton Bray, had five children

In 1228, Isabella was betrothed to Dafydd ap Llywelyn, son of Llywelyn ap Iorwerth, also known as Llywelyn the Great, Prince of Gwynedd and Prince of Powys Wenwynwyn, and Joan, Lady of Wales, an illegitimate daughter of King John of England. The betrothal came about interestingly. In 1228, Isabella’s father William de Braose was captured in battle by Dafydd’s father Llywelyn the Great, Prince of Gwynedd. To be released, William de Braose had to pay a ransom of £2,000, agree to never take up arms against Llywelyn, and agree to arrange the marriage between his eldest daughter and co-heiress Isabella. With these terms agreed to, William de Braose was released in 1229.

Before the marriage could take place, a scandalous incident occurred. During a friendly visit to Llywelyn’s court during Eastertide, William de Braose was found in the middle of the night in the bedchamber of Llywelyn’s wife Joan. Llywelyn had Joan and William separately imprisoned. Joan was eventually released by her husband but William da Braose was publicly hanged on May 2, 1230. However, Llywelyn did not wish to jeopardize his son’s advantageous proposed marriage. He wrote to William’s widow Eva, explaining that he had been forced to order the hanging due to the insistence by the Welsh lords, and to Eva’s brother William Marshal, 2nd Earl of Pembroke, who was the guardian of Isabella and her three sisters, expressing his desire for the marriage to continue. Dafydd and Isabella were married in 1230 but their marriage was childless.

Manuscript drawing showing Llywelyn the Great on his deathbed with his sons Gruffydd and Dafydd, Isabella’s husband. By Matthew Paris, circa 1259; Credit – Wikipedia

Dafydd’s father Llywelyn suffered a stroke in 1237, and thereafter Dafydd took an increasing part in the rule of the principality of Gwynedd. On April 11, 1240, Llywelyn the Great died and Isabella’s husband Dafydd succeeded him as Prince of Gwynedd. He reigned for a little less than six years, dying on February 25, 1246, at Aber Garth Celyn, the royal palace in Abergwyngregyn, Wales. According to Welsh law, as the widow of Dafydd, Prince of Gwynedd, Isabella inherited livestock and other property. Isabella’s dowry was contested by the English crown and it was transferred to the English crown via the 1247 Treaty of Woodstock. However, upon the death of her mother in 1246, Isabella had inherited Haverfordwest Castle in Wales, and land in Caerleon and Glamorgan, also in Wales. Isabella died circa 1248, probably at Godstow Abbey, now in ruins, in Gosstow, Oxfordshire, England, where she was buried.

Godstow Abbey ruins; Credit – By Adrian Miller, CC BY-SA 2.0, https://commons.wikimedia.org/w/index.php?curid=13594010

Isabella and her husband Dafydd are among the characters in the late Sharon Penman‘s wonderful historical fiction trilogy, The Welsh Trilogy (The Reckoning, Falls the Shadow, and Here Be Dragons). Sharon Penman’s research was impeccable and this writer learned much about Welsh history by reading the three novels.

This article is the intellectual property of Unofficial Royalty and is NOT TO BE COPIED, EDITED, OR POSTED IN ANY FORM ON ANOTHER WEBSITE under any circumstances. It is permissible to use a link that directs to Unofficial Royalty.

Works Cited

• Flantzer, Susan. (2023). Dafydd ap Llywelyn, Prince of Gwynedd. Unofficial Royalty.
• Isabella Braose. WikiTree. (2020). https://www.wikitree.com/wiki/Braose-28
• Wikimedia Foundation. (2022). Isabella de Braose. Wikipedia. https://en.wikipedia.org/wiki/Isabella_de_Braose
• Wikimedia Foundation. (2023). William de Braose (died 1230). Wikipedia. https://en.wikipedia.org/wiki/William_de_Braose_(died_1230)

by Susan Flantzer
© Unofficial Royalty 2023

Wales was divided into a number of separate kingdoms. The largest of these was Gwynedd in northwest Wales and Powys in east Wales. Gwynedd was the most powerful of the Welsh kingdoms. For one man to rule all of Wales during this period was rare. This was because of the inheritance system practiced in Wales. All sons received an equal share of their father’s property, including illegitimate sons, resulting in the division of territories.

The Principality of Wales was created in 1216 at the Council of Aberdyfi when it was agreed by Llywelyn the Great and the other Welsh princes that he was the paramount Welsh ruler and the other Welsh princes would pay homage to him. Although he never used the title, Llywelyn was the de facto Prince of Wales. Llywelyn dominated Wales for 45 years and was one of only two Welsh rulers to be called “the Great”, the other being his ancestor Rhodri the Great. Llywelyn was succeeded by his son Dafydd ap Llywelyn and then by his two grandsons who were the sons of his illegitimate son Gruffydd ap Llywelyn.

The campaign of King Edward I of England in Wales (1276 – 1284) resulted in Wales being completely taken over by England. It ended with the deaths of the last two native Princes of Wales: Llywelyn ap Gruffudd who was ambushed and killed in 1282 and his brother Dafydd ap Gruffydd, who was the first prominent person in recorded history to have been hanged, drawn, and quartered, in 1283. To ensure there would be no further members of the House of Aberffraw, the English imprisoned Dafydd ap Gruffydd’s two young sons for the rest of their lives at Bristol Castle and sent his daughter and the daughter of his brother Llywelyn ap Gruffydd to convents. To further humiliate the Welsh, King Edward I invested his son and heir, the future King Edward II, with the title Prince of Wales. Since then, the title has been granted (with a few exceptions) to the heir apparent of the English or British monarch.

• Unofficial Royalty: Principality of Wales Index

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Manuscript drawing showing Llywelyn the Great on his deathbed with his sons Gruffydd and Dafydd. By Matthew Paris, circa 1259; Credit – Wikipedia

(Note: In Welsh, “ap” means “son of” and “ferch” means “daughter of”)

Dafydd ap Llywelyn was the first Welsh ruler to claim the title Prince of Wales. He was born circa April 1212, at Castell Hen Blas in Coleshill, Wales, the only son of Llywelyn ap Iorwerth, known as Llywelyn the Great, Prince of Gwynedd and Prince of Powys Wenwynwyn, and Joan, Lady of Wales, an illegitimate daughter of King John of England. Dafydd’s paternal grandparents were Iorwerth ab Owain, son of Owain Gwynedd, King of Gwynedd, and Marared ferch Madog, daughter of Madog ap Maredudd, Prince of Powys. His maternal grandfather was King John of England. The identity of Dafydd’s maternal grandmother is uncertain. She could possibly be Clementia d’Arcy, the daughter of Geoffroy d’Arcy, Agatha Ferrers, daughter of William de Ferrers, 3rd Earl of Derby, or Sibylla de Braose, daughter of William de Braose, 3rd Lord of Bramber.

Dafydd’s parents Llywelyn the Great (Credit – Wikipedia) and Joan, Lady of Wales (from a stained glass window at St. Mary’s Church, Trefriw, Conwy County, Wales; Credit – www.findagrave.com)

Dafydd’s parents had three children but probably had more. Dafydd definitely had two sisters:

• Gwladus Ddu (1206 – 1251), married (1) Reginald de Braose, no children (2) Ralph de Mortimer, had three sons
• Elen ferch Llywelyn (1207 – 1253), married (1) John the Scot, 9th Earl of Huntingdon and 7th Earl of Chester, no children (2) Sir Robert de Quincy, had one daughter Hawise whose granddaughter Margaret Wake was the mother of Joan, 4th Countess of Kent, the first English Princess of Wales and the mother of King Richard II of England

Some of Llywelyn’s other recorded children may also have been Joan’s so the following were either Dafydd’s sisters or half-sisters:

• Susanna (? – after 1228), was sent to England as a hostage in 1228
• Elen the Younger ferch Llywelyn (before 1230 – after 1295), married (1) Máel Coluim II, Earl of Fife, had two sons (2) Domhnall I, Earl of Mar, had five children (Elen and Domhall’s daughter Isabella of Mar married Robert the Bruce, King of Scots who had one child Marjorie Bruce, the mother of the first Stewart monarch, Robert II, King of Scots.)
• Angharad ferch Llywelyn (? – 1260) married Maelgwn Fychan of Deheubarth, had four children
• Marared ferch Llywelyn (? – after 1268) married (1) Sir John de Braose, had three sons (2) Sir Walter de Clifford, had one daughter

Dafydd had a half-brother, the son of Tangwystl ferch Llywarch Goch, Llywelyn’s mistress:

• Gruffydd ap Llywelyn (circa 1196 – 1244), married Senena ferch Caradog, had two sons who both reigned as Prince of Gwynedd: Llywelyn ap Gruffudd, Prince of Gwynedd and Dafydd ap Gruffydd, Prince of Gwynedd (Unofficial Royalty articles coming.)

Llywelyn wanted Dafydd to be his sole heir but with the inheritance system in Wales at that time, all sons received an equal share of their father’s property, including illegitimate sons, resulting in the division of assets. In 1220, Llywelyn managed to convince Dafydd’s maternal uncle King Henry III of England to recognize Dafydd as his sole heir, and in 1226, Pope Honorius III officially declared Llywelyn’s wife Joan to be the legitimate daughter of King John of England, strengthening Dafydd’s position. In 1238, at a council at Ystrad Fflur Abbey, the other Welsh princes recognized Dafydd as Llywelyn’s sole legitimate heir.

In 1228, Daffyd was betrothed to Isabella de Braose, daughter of William de Braose, Lord of Abergavenny and Eva Marshal, the daughter of William Marshal, 1st Earl of Pembroke. Also called William the Marshal, Eva’s father served five Kings of England – King Henry II, his sons Henry the Young King, King Richard I, and King John, and John’s son King Henry III. The betrothal came about in an interesting manner. In 1228, William de Braose, Lord of Abergavenny, one of the most powerful barons in the Welsh Marches, a vaguely defined area along the border between England and Wales, was captured in battle by Dafydd’s father Llywelyn the Great, Prince of Gwynedd. To be released, William de Braose had to pay a ransom of £2,000, agree to never take up arms against Llywelyn, and agree to arrange the marriage between his eldest daughter and co-heiress Isabella. With these terms agreed to, William de Braose was released in 1229.

Before the marriage could take place, a scandalous incident occurred. During a friendly visit to Llywelyn’s court during Eastertide, William de Braose was found in the middle of the night in the bedchamber of Llywelyn’s wife Joan. Llywelyn had Joan and William separately imprisoned. Joan was eventually released by her husband, who was genuinely fond of her, but William da Braose was publicly hanged on May 2, 1230. However, Llywelyn did not wish to jeopardize his son’s advantageous proposed marriage. He wrote to William’s widow Eva, explaining that he had been forced to order the hanging due to the insistence by the Welsh lords, and to Eva’s brother William Marshal, 2nd Earl of Pembroke, who was now the guardian of Isabella and her three sisters, expressing his desire for the marriage to continue. Dafydd and Isabella were married in 1230 but their marriage was childless.

In 1237, Dafydd’s mother Joan, Lady of Wales died. Dafydd’s father Llywelyn suffered a stroke that same year, and thereafter Dafydd took an increasing part in the rule of the principality. On April 11, 1240, Llywelyn the Great died and Dafydd succeeded him as Prince of Gwynedd.

Although Dafydd’s maternal uncle King Henry III of England accepted his claim to rule Gwynedd, Henry III was not in favor of allowing Dafydd to keep his father’s conquests outside Gwynedd. In August 1241, King Henry III invaded Gwynedd, and after a short war, under the Treaty of Gwerneigron, Dafydd was forced to give up all his lands outside Gwynedd and hand over his imprisoned half-brother Gruffydd to King Henry III who imprisoned him in the Tower of London. Since Gruffydd was a rival claimant to the Principality of Gwynedd, Henry III put limits on Dafydd by threatening to set up Gruffydd as a rival in Gwynedd. However, on March 1, 1244, Gruffydd fell to his death while trying to escape from the Tower of London by climbing down a knotted bedsheet.

Gruffydd ap Llywelyn falling to his death from the Tower of London; Credit – By Matthew Paris, circa 1259; Credit – Wikipedia

After Gruffydd’s death, Dafydd, along with an alliance of Welsh princes, attacked English possessions in Wales. By March 1245, Dafydd had recovered his former possessions. However, in August 1245, King Henry III again invaded Gwynedd and suffered a defeat. Despite the defeat, Henry III continued in Wales as far as the River Conwy and began building a new castle at Deganwy. The English and Welsh armies continued fighting at Deganwy until the English army ran short of provisions because some of their supplies had been captured by the Welsh. A truce was agreed and the English army withdrew in the autumn.

The truce remained in effect throughout the winter but the death of thirty-three-year-old Dafydd, Prince of Gwynedd on February 25, 1246, at Aber Garth Celyn, the royal palace in Abergwyngregyn, Wales effectively ended the war. Dafydd was buried with his father Llywelyn the Great, Prince of Gwynedd at Aberconwy Abbey in Conwy, Wales which his father had founded. Because Dafydd had no son, he was succeeded by Llywelyn ap Gruffudd, the son of his half-brother Gruffydd ap Llywelyn.

Dafydd and his family are among the characters in the late Sharon Penman‘s wonderful historical fiction trilogy, The Welsh Trilogy (The Reckoning, Falls the Shadow, and Here Be Dragons). Sharon Penman’s research was impeccable and this writer learned much about Welsh history by reading the three novels.

This article is the intellectual property of Unofficial Royalty and is NOT TO BE COPIED, EDITED, OR POSTED IN ANY FORM ON ANOTHER WEBSITE under any circumstances. It is permissible to use a link that directs to Unofficial Royalty.

Works Cited

• Flantzer, Susan. (2023). Joan, Lady of Wales. Unofficial Royalty. https://www.unofficialroyalty.com/joan-lady-of-wales-wife-of-llywelyn-the-great-prince-of-gwynedd/
• Flantzer, Susan. (2015). Llywelyn Fawr (Llywelyn the Great). Unofficial Royalty. https://www.unofficialroyalty.com/llywelyn-ap-iorwerth-llywelyn-fawrllywelyn-the-great/
• Wikimedia Foundation. (2023). Dafydd ap Llywelyn. Wikipedia. https://en.wikipedia.org/wiki/Dafydd_ap_Llywelyn
• Wikimedia Foundation. (2021). Dafydd ap Llywelyn. Wikipedia (German). https://de.wikipedia.org/wiki/Dafydd_ap_Llywelyn
• Wikimedia Foundation. (2022, May 31). Dafydd ap Llywelyn. Wikipedia (Welsh). https://cy.wikipedia.org/wiki/Dafydd_ap_Llywelyn