Archibald Kennedy, 1st Marquess of Ailsa
Archibald Kennedy, 1st Marquess of Ailsa KT, FRS (February 1770 – 8 September 1846), styled Lord Kennedy between 1792 and 1794 and known as The Earl of Cassilis between 1794 and 1831, was a Scottish peer.
Kennedy was the eldest son of Archibald Kennedy, 11th Earl of Cassilis, by Anne, daughter of John Watts and descendant of the Schuyler family, the Van Cortlandt family (including Stephanus Van Cortlandt), and the Delancey family of British North America. He became known by the courtesy title Lord Kennedy when his father succeeded to the earldom of Cassilis in 1792.
Kennedy succeeded to the earldom on the death of his father 30 December 1794. He sat in the House of Lords as a Scottish Representative Peer between 1796 and 1806. In the latter year he was created Baron Ailsa, of Ailsa in the County of Ayr, in the Peerage of the United Kingdom, which entitled him to an automatic seat in the House of Lords. He was admitted a Fellow of the Royal Society on 18 February 1819. In 1831 he was created Marquess of Ailsa, of the Isle of Ailsa in the County of Ayr. He voted for the Reform Bill in 1832.
- Lady Alicia Jane Kennedy (d. 1887), married Jonathan Peel and had issue.
- Archibald Kennedy, Earl of Cassilis (1794–1832), married Eleanor Allardyce and had issue.
- Lady Anne Kennedy (1798–1877), married Sir David Baird of Newbyth, 2nd Baronet and had issue.
- Lady Margaret Kennedy (1800–1889), married Thomas Radclyffe-Livingstone-Eyre.
- Lady Mary Kennedy (1800–1886), married Richard Oswald, son of Richard Alexander Oswald, M.P. for Ayr of Auchencruive Estate.
- The Hon. John Kennedy-Erskine (1802–1831), married Lady Augusta FitzClarence, an illegitimate daughter of King William IV and Dorothy Jordan and had issue (their granddaughter was the writer and poet Violet Jacob). John Kennedy-Erskine assumed the additional name of Erskine on being named heir to the House of Dun.
Lord Ailsa bought a house near Twickenham in London that had previously belonged to the playwright Richard Brinsley Sheridan. He named it "St Margaret's" and the name of the house has now been applied to the whole adjacent area. Ailsa Road and Ailsa Avenue in the area are also named after him.
- thepeerage.com Sir Archibald Kennedy, 1st Marquess of Ailsa
- "Lists of Royal Society Fellows". Archived from the original on 22 January 2007. Retrieved 15 December 2006.
- "St Margarets". Hidden London. Retrieved 19 March 2016.
- Hansard 1803–2005: contributions in Parliament by Archibald Kennedy, 1st Marquess of Ailsa
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