Isabella Ingram-Seymour-Conway, Marchioness of Hertford, Mistress of King George IV of The United Kingdom

by Scott Mehl  © Unofficial Royalty 2020

Isabella Ingram-Seymour-Conway, Marchioness of Hertford was the mistress of the future King George IV of the United Kingdom from 1807-1819.

Isabella Ingram-Seymour-Conway, Marchioness of Hertford source: Wikipedia

Isabella Anne Ingram was born in London on July 7, 1759, the eldest of five daughters of Charles Ingram, 9th Viscount of Irvine and Frances Shepherd. Charles Ingram was a prominent landowner and politician and served as a Groom of the Bedchamber to King George III from 1756 until 1763. Isabella had four younger sisters:

On May 20, 1776, she married Francis Seymour-Conway, Viscount Beauchamp, the eldest son of Francis Seymour-Conway, 1st Marquess of Hertford, and Lady Isabella Fitzroy, a daughter of the 2nd Duke of Grafton. Beauchamp would later succeed his father as 2nd Marquess of Hertford in 1794.

Francis spent much of his life in politics and public service. He served in the Irish House of Commons from 1761-1776 and held the position of Chief Secretary for Ireland under his father, who served as Lord Lieutenant of Ireland from 1765-1766. He was a Lord of the Treasury from 1774-1780, and then Cofferer of the Household until 1782. A member of the Privy Council, he was appointed Master of the Horse in 1804, and Lord Chamberlain of the Household from 1812-1821.

Isabella and her husband had one son:

Ragley Hall. photo: By DeFacto – Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=57719761

The Seymour-Conways were one of the wealthiest families in Britain, with an extensive portfolio of land and properties throughout England, Ireland and Wales. Future generations would amass an extensive art collection that would later be left to the nation. Known as the Wallace Collection, it is housed at the former Hertford House, the family’s townhouse in London. In addition to their London home, Isabella and her husband also inherited Ragley Hall in Warwickshire, which would later become one of the first stately homes in Britain to be opened to the public, and Sudbourne Hall in Suffolk.

It was around 1806 when The Prince of Wales began to notice and pursue Isabella. At the time, the Prince was engaged in a legal battle over the guardianship of Minney Seymour, a ward of his mistress (and wife) Maria Fitzherbert. Using his influence, he had Isabella and her husband named as guardians to the young girl, with the assurance that Maria Fitzherbert would continue to raise her. It was then that he began to notice Lady Hertford. Despite her initial refusal, she soon replaced Mrs. Fitzherbert as the Prince’s mistress. Their relationship lasted for 12 years, during which time the Prince often visited Isabella at Ragley Hall and Hertford House. He had also visited her at Temple Newsam, in Leeds, where he gifted Isabella with some Chinese wallpaper and some tapestries.

Temple Newsam. source: Wikipedia

Temple Newsam had been the ancestral home of the Viscounts of Irvine. Following her father’s death, the property went to Isabella’s mother, and then passed to Isabella in 1807 upon her mother’s death. It was at that point that Isabella and her husband added ‘Ingram’ to their surname, becoming Ingram-Seymour-Conway. Temple Newsam had a rich history of royal connections. Perhaps the most widely known is that it was the birthplace of Henry Stuart, Lord Darnley, the husband of Mary, Queen of Scots, and father of King James IV of Scotland/James I of England.

In 1819, Isabella’s relationship with the Prince ended, as she was replaced by the Marchioness of Conyngham, who would become his last official mistress. Following her husband’s death in 1822, Isabella retreated to the family’s homes, spending much of her time at Temple Newsam and Ragley Hall, and living a relatively quiet life. She died at Ragley Hall on April 12, 1834, having lived through the entire reign of her former lover as King George IV and the succession of his younger brother, King William IV. She is buried at the Holy Trinity Church in Arrow, Warwickshire, near Ragley Hall.

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