Augustus FitzRoy, 3rd Duke of Grafton

He was a son of Lord Augustus FitzRoy, a captain in the Royal Navy, and Elizabeth Cosby, the daughter of Colonel William Cosby, who served as a colonial Governor of New York. His father was the third son of the 2nd Duke of Grafton and Lady Henrietta Somerset, which made FitzRoy a great-grandson of both the 1st Duke of Grafton and the Marquess of Worcester. He was notably a fourth-generation descendant of King Charles II and the 1st Duchess of Cleveland; the surname FitzRoy stems from this illegitimacy. His younger brother was the 1st Baron Southampton. Since the death of his uncle in 1747, he was styled Earl of Euston as his grandfather's heir apparent.

Euston was educated at Newcome's School (pictured)

Lord Euston was educated at Newcome's School in Hackney and at Westminster School, made the Grand Tour, and obtained a degree at Peterhouse, University of Cambridge.[1]

In 1756, he entered Parliament as MP for Boroughbridge, a pocket borough; several months later, he switched constituencies to Bury St Edmunds, which was controlled by his family. However, a year later, his grandfather died, and he succeeded as the 3rd Duke of Grafton, which elevated him to the House of Lords.

He first became known in politics as an opponent of Lord Bute,[2] a favourite of King George III. Grafton aligned himself with the Duke of Newcastle against Lord Bute, whose term as prime minister was short-lived largely because it was felt that the peace terms to which he had agreed at the Treaty of Paris were not a sufficient return for Britain's performance in the Seven Years' War.

In 1765, Grafton was appointed a Privy Counsellor; then, following discussions with William Pitt the Elder, he was appointed Northern Secretary in Lord Rockingham's first government. However, he retired the following year, and Pitt (by then Lord Chatham) formed a ministry in which Grafton was First Lord of the Treasury but not the prime minister.[3]

On September 20, 1769, he was appointed a Knight of the Order of the Garter.

In later years, he was a prominent Unitarian, being one of the early members of the inaugural Essex Street Chapel under Rev. Theophilus Lindsey when it was founded in 1774. Grafton had associated with a number of liberal Anglican theologians when at Cambridge, and devoted much time to theological study and writing after leaving office as prime minister. In 1773, in the House of Lords, he supported a bill to release Anglican clergy from subscribing to all the Thirty-nine Articles. He became a supporter of moral reform among the wealthy and of changes to the church. He was the author of:

• Hints Submitted to the Serious Attention of the Clergy, Nobility and Gentry, by a Layman (1789).
• Serious Reflections of a Rational Christian from 1788–1797.

He was a sponsor of Richard Watson's Consideration of the Expediency of Revising the Liturgy and Articles of the Church of England (published in 1790), and he funded the printing of 700 copies of Griesbach's edition of the Greek New Testament in 1796.[5]

The Duke also had horse racing interests. His racing colours were sky blue, with a black cap.[6]

Grafton County, New Hampshire,[7] in the United States, is named in his honour, as is the city of Grafton, New South Wales, Australia, the town of Grafton, New York, the unincorporated community of Grafton, Virginia, and possibly the township (since 1856 a city) of Grafton, West Virginia. The Grafton Centre Shopping Mall in Cambridge is also named after him and indeed lies on Fitzroy Street. Cape Grafton in Far North Queensland was named after him by Lieutenant James Cook during his first voyage of discovery.

Grafton had the longest post-premiership of any prime minister in British history, totalling 41 years and 45 days.[8]

Grafton's first wife, Anne Liddell

Grafton's second wife, Elizabeth Wrottesley

On 29 January 1756, he married The Hon. Anne Liddell, daughter of Henry Liddell, 1st Baron Ravensworth (1708–1784), at Lord Ravensworth's house in St James's Square, by licence. The marriage was witnessed by Lord Ravensworth and Francis Seymour-Conway, 1st Earl of Hertford.[9]

Augustus and Anne had three children:

• Lady Georgiana FitzRoy[10] (8 May 1757 – 18 January 1799),[11] who married John Smyth (12 February 1748 – 12 February 1811) on 4 June 1778.
• George Henry FitzRoy, 4th Duke of Grafton (1760–1844)
• General Lord Charles FitzRoy (14 July 1764 – 20 December 1829), who married, firstly, Frances Mundy (1773 – 9 August 1797) on 20 June 1795, and had one son. He married, secondly, Lady Frances Stewart (24 June 1777 – 9 February 1810) on 10 March 1799 and had three children. His sons Sir Charles FitzRoy (1796–1858), governor of New South Wales, and Robert FitzRoy, the hydrographer, were notable for their achievements.[12]

In 1764, the Duke had a very public affair with the courtesan Nancy Parsons[13] whom he kept at his townhouse and took to the opera, where they allegedly were found in flagrante delicto. This brazen lack of convention offended society's standards. After the Duchess had become pregnant by her own lover, the Earl of Upper Ossory, she and the Duke were divorced by Act of Parliament, passed 23 March 1769.[14] Three months later, on 24 June 1769, the Duke married Elizabeth Wrottesley (1 November 1745 – 25 May 1822), daughter of the Reverend Sir Richard Wrottesley, Dean of Worcester.[15] They had the following children:

• Lord Henry FitzRoy (9 April 1770 – 7 June 1828), clergyman; he married Caroline Pigot (died 1 January 1835) on 10 September 1800 and had five children. Ancestor of Daisy Greville, Countess of Warwick.
• Lord Frederick FitzRoy (born 16 September 1774; died young).
• Lady Augusta FitzRoy (1779 – 29 June 1839), who married Rev. George F. Tavel (died 1829) on 19 November 1811.
• Lady Frances FitzRoy (1 June 1780 – 7 January 1866), who married the 1st Baron Churchill on 25 November 1800.
• Admiral Lord William FitzRoy (1 June 1782 – 13 May 1857), who married Georgiana Raikes (died 2 December 1861) in 1816 and had two children.
• Lord John Edward FitzRoy (24 September 1785 – 28 December 1856), MP, died unmarried.
• Lady Charlotte FitzRoy (died 23 June 1857).
• Lady Elizabeth FitzRoy (died 13 March 1839), who married her cousin Lt. Gen. The Hon. William FitzRoy (1773–1837), son of the 1st Baron Southampton, on 4 July 1811.
• Lady Isabella FitzRoy (died 10 December 1866), who married Barrington Pope Blachford (3 December 1783 – 14 May 1816) on 11 August 1812.

Grafton is thus the first British prime minister before Anthony Eden[16] (and one of only three) to have been divorced, and the second, after Robert Walpole, to marry while in office. Grafton would be the only prime minister to divorce and remarry while in office until Boris Johnson in 2021.[17] FitzRoy died on 14 March 1811.

• Durrant, Peter (2004). Oxford Dictionary of National Biography. Vol. 19. Oxford University Press. ISBN 978-0-19-861369-5.

• Hellicar, Eileen (1 January 1978). "Duke of Grafton (Augustus Henry Fitzroy)". Prime Ministers of Britain. David & Charles. ISBN 978-0-7153-7486-3.

• The Third Duke of Grafton
• More about Augustus Henry Fitzroy, Duke of Grafton on the 10 Downing Street website.
• Hansard 1803–2005: contributions in Parliament by the Duke of Grafton