Marquess of Ailsa, of the Ailsa Craig 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 titl
Arms of Kennedy, Marquesses of Ailsa: Argent, a Chevron Gules, between three crosses-Crosslet fitchée Sable, the whole within a Double-Tressure flory counterflory of the second. Crest: A Dolphin naiant proper. Supporters: On either side, a Swan wings inverted proper, beaked and membered Gules