Duncan Alexander Eliott Mackintosh of Mackintosh-Torcastle and Clan Chattan (1 December 1884 – 29 May 1966) was the 31st Chief of Clan Chattan, a confederation of Scottish Highland Clans. As a result of the 29th Chief's preferment of a more distant cousin and Arbell Mackintosh becoming the 30th Chief until her marriage to Anthony Warre (a name not belonging to Clan Chattan) it devolved on the 29th Chief's next heir in line, Duncan Alexander Eliott Mackintosh by the order of Lord Lyon King of Arms issued on 27 March 1947 who became 31st Chief and matriculated ‘as of right and without brisur or mark of cadency Ensigns armorial of and appropriate to Mackintosh of Mackintosh-Torcastle and Clan Chattan, marshalled as effeirs for the Inheritor of the Honourable the Clan Chattan… as Head of the ‘