Haakon VI, King of Norway, King of Sweden

by Susan Flantzer
© Unofficial Royalty 2025

The royal seal of King Haakon; Credit – Wikipedia

Haakon VI was King of Norway from 1343 to 1380 and King of Sweden from 1362 to 1364, and the husband of Margrethe I, the reigning Queen of Denmark (1387 – 1412), Norway (1388 – 1412), and Sweden (1389 – 1412) after his death. Haakon’s exact birth date and place of birth are unknown. He was possibly born in mid-August 1340, most likely in Sweden. Haakon was the second of the two sons of Magnus Eriksson, King of Sweden and King of Norway and Blanche of Namur. Haakon’s father was King Magnus VII of Norway but medieval Swedish kings did not use regnal numbers as part of their title. Haakon’s paternal grandparents were the Swedish Eric, Duke of Södermanland and the Norwegian Ingeborg Haakonsdatter. His maternal grandparents were John I, Count of Namur and Marie of Artois.

Queen Blanche of Sweden, and Prince Haakon, 1877 historical painting by Finnish artist Albert Edelfelt; Credit – Wikipedia

Haakon’s mother Queen Blanche is remembered in Sweden for the song: “Rida rida ranka, hästen heter Blanka” (“Ride, ride on my knee, the horse is called Blanka”), which influenced the famous 1877 historical painting of Blanche and her son Haakon by Finnish artist Albert Edelfelt.

Haakon had one elder brother Eric Magnusson (1339 – 1359) and at least three unknown sisters who died in infancy or early childhood. Eric married Beatrix of Bavaria. The couple had no surviving children and both Erik and Beatrix died in 1359, probably from the black plague.

When Haakon was born, his father Magnus decided to divide his kingdoms between his sons. Eric was designated to succeed his father as King of Sweden, while Haakon would become King of Norway. Haakon had become a very young King of Norway in 1343. Opposition to Magnus’ rule in Norway led to an agreement between Magnus and the Norwegian nobles. Haakon would become King of Norway, with Magnus as regent during his minority. In 1344, Haakon’s five-year-old brother Eric was formally elected King of Sweden and co-reigned with his father. In 1362, three years after Eric’s death, Haakon became co-ruler of Sweden with his father. The two reigned over Sweden together until 1364, when they were deposed in favor of Magnus’ nephew Albert III, Duke of Mecklenburg by a group of exiled Swedish noblemen. Magnus and Haakon tried to retake the Swedish throne but were unsuccessful. With no throne, Magnus lived with his son Haakon in Norway. On 1 December 1, 1374, Haakon’s father Magnus, aged 58, drowned in a shipwreck in Bømlafjorden, a fjord in Norway.

Margrethe’s effigy on her tomb at Roskilde Cathedral in Roskilde, Denmark; Credit – Wikipedia

In 1359, King Valdemar IV of Denmark betrothed his six-year-old daughter Margrethe of Denmark to eighteen-year-old King Haakon VI of Norway as part of an alliance treaty. Four years later, on April 9, 1363, King Haakon VI and Margrethe were married at Copenhagen Cathedral in Denmark. Haakon’s parents Magnus Eriksson and Blanche attended the wedding. Shortly after the wedding, Blanche fell ill and died. The cause of death and the place where she is buried are unknown.

Ten-year-old Margrethe, now Queen Consort of Norway and Sweden, remained in Denmark for some time after the wedding. Eventually, she moved to Norway and lived primarily at Akershus Fortress in Oslo. Margrethe was too young for the marriage to be consummated. She spent her time getting acclimated to Norway and preparing for her duties as Queen Consort.

Haakon and Margrethe’s son Olaf who was King of Denmark and King of Norway; Credit – Wikipedia

Margrethe and Haakon VI had one son, born at Akershus Fortress in Oslo, Norway:

Margrethe’s father Valdemar IV, King of Denmark died on October 24, 1375, and Margrethe was the only survivor of his six children. It was expected Albrecht IV, Duke of Mecklenburg-Schwerin, the son of Ingeborg of Denmark, Valdemar IV’s eldest child who survived childhood and had children, would claim the Danish throne. However, Margrethe managed to win over the Danish royal council by offering them lucrative grants and agreements. She also won the support of the Hanseatic League, a commercial and defensive network of merchant guilds and market towns in central and northern Europe, which did not want the House of Mecklenburg to gain power in Denmark. On May 3, 1376, Haakon and Margrethe’s five-year-old son Olaf was proclaimed King of Denmark with his mother Margrethe acting as Regent of Denmark because of her son’s young age.

The ruins of St. Mary’s Church in Oslo where King Haakon VI was buried; Credit – By Grzegorz Wysocki Own work, CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=2827853

Haakon never stopped attempting to reclaim the Swedish throne. He was exhausted by the constant warfare and the conflict with his cousin Albert of Mecklenburg who had been King of Sweden since 1364. On September 11, 1380, forty-year-old King Haakon VI of Norway died in Oslo, Norway, and was buried at St. Mary’s Church in Oslo which now lies in ruins. Haakon’s ten-year-old son Olaf, King of Denmark was now also King of Norway, and his mother Margrethe, Regent of Denmark, was also Regent of Norway. With Olaf’s accession to the throne of Norway, 434 years of a Danish-Norwegian union began.

On August 3, 1387, Haakon and Margrethe’s sixteen-year-old son Olaf II, King of Denmark/Olaf IV, King of Norway died. During her son’s reign, Margrethe had been a very capable Regent of Denmark and Norway. After her son’s death, she used all her diplomatic skills and was named Queen of Denmark on August 10, 1387, and Queen of Norway on February 2, 1388. Margrethe joined forces with the Swedish nobles who rose against the unpopular King Albert of Sweden, Haakon’s cousin who had taken the Swedish throne in 1364, when he attempted to reduce the land holdings of the Swedish nobility. At a meeting at Dalaborg Castle in Sweden in March 1388, the Swedish nobles proclaimed Margrethe to be Sweden’s “sovereign lady and rightful ruler”. Margrethe sent troops to Sweden and on February 24, 1389, they defeated King Albert of Sweden at the Battle of Åsle, something that Haakon had never been able to do.

Margrethe was now the reigning Queen of Denmark, Norway, and Sweden. She was the founder of the Kalmar Union which united the three kingdoms of Denmark, Norway, and Sweden under a single monarch from 1397 – 1523. Margrethe I, Queen of Denmark, Norway, and Sweden was called “the first great ruling queen in European history” by Norwegian-American author, historian, and college professor Knut Gjerset. Because Queen Margrethe I had no living children, she adopted her great-nephew Eric of Pomerania. When Eric came of age, he was declared co-ruler in Denmark, Norway, and Sweden, however, Margrethe remained the effective ruler of all three kingdoms for the remainder of her life. Margrethe I, Queen of Denmark, Norway, and Sweden survived her husband by thirty-two years, dying on October 28, 1412, aged fifty-nine. She was interred in Roskilde Cathedral in Roskilde, Denmark.

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Works Cited

  • Bidragsytere til Wikimedia-prosjektene. (2004). Konge av Sverige og Norge. Wikipedia.org; Wikimedia Foundation, Inc. https://no.wikipedia.org/wiki/H%C3%A5kon_VI_Magnusson
  • Flantzer, Susan. (2025). Margrethe I, Queen of Denmark, Norway, and Sweden. Unofficial Royalty. https://www.unofficialroyalty.com/margrethe-i-queen-of-denmark-norway-and-sweden-2/
  • Magnus IV of Sweden. (2023). Wikipedia. https://en.wikipedia.org/wiki/Magnus_IV_of_Sweden
  • Wikipedia Contributors. (2024). Blanche of Namur. Wikipedia; Wikimedia Foundation.
  • Wikipedia Contributors. (2024). Haakon VI. Wikipedia; Wikimedia Foundation.