Marquess of Ailsa


Marquess of Ailsa, of the Isle of Ailsa in the County of Ayr, is a title in the Peerage of the United Kingdom. It was created on 10 September 1831 for Archibald Kennedy, 12th Earl of Cassillis. The title Earl of Cassillis had been created in 1509 for the 3rd Lord Kennedy. This title had been created in the Peerage of Scotland in 1457. The 1st Marquess had been created Baron Ailsa in the Peerage of the United Kingdom on 12 November 1806.
The name of the title was taken from the Island of Ailsa Craig in the Firth of Clyde.
James Kennedy, Archbishop of St Andrews, was the younger brother of the first Lord Kennedy.
The Marquess of Ailsa is the hereditary Clan Chief of Clan Kennedy.
The family's seats were Cassillis House and Culzean Castle, near Maybole, Ayrshire.

Lords Kennedy (1457)

Earls of Cassillis (1509)

From 1759 to 1762 the titles and estates were in dispute between the heir male and the heir general. The latter, William Douglas, 4th Duke of Queensberry|William, Earl of Ruglen and March later Duke of Queensberry, was son and heir of William Douglas, 2nd Earl of March|William, Earl of March, by his wife Anne Hamilton, Countess of Ruglen|Anne, suo jure Countess of Ruglen, 1st dau. and heir of line of John Hamilton, 3rd Earl of Selkirk|John, Earl of Selkirk and Ruglen, by his first wife Lady Anne Kennedy, the only daughter that had issue of John, 7th Earl of Cassillis. He claimed the estates under an entail of 5 September 1698, which he contended could not be set aside by the entail of 1759. The entail of 1759 was however upheld, though by a narrow majority, in the Court of Session, and confirmed, on appeal, by the House of Lords. He then, under the designation of "William, Earl of Cassillis, Ruglen and March" claimed "the titles and honours of Earl of Cassillis and Lord Kennedy," on the ground of certain charters of 24 April 1641 and 29 September 1642. Sir Thomas Kennedy, Bart., claimed the said titles as heir male, and the two petitions having been laid before the House of Lords, it was adjudged, 27 January 1762, that the latter had a right "to the honour and dignity of Earl of Cassillis as heir male of the body of David, the 1st Earl of Cassillis, and of Lord Kennedy as heir male of the body of Gilbert, the 1st Lord Kennedy."

Marquesses of Ailsa (1831)

Present peer

David Thomas Kennedy, 9th Marquess of Ailsa is the younger son of the 7th Marquess of Ailsa and his wife Mary Burn and was educated at Strathallan School in Perthshire and the Berkshire College of Agriculture.
As Lord David Kennedy, in 1991 he married Anne Kelly, daughter of Bernard Kelly, and they have two children:
  • Lady Katherine Jean Kennedy
  • Archibald David Kennedy, Earl of Cassilis
On 16 January 2015, he succeeded his older brother as Marquess of Ailsa, Earl of Cassillis, Baron Ailsa and Lord Kennedy.

Succession and family tree

Archibald Kennedy, 11th Earl of Cassillis

Works cited