The MacKinnons also claim descent from Fingon, making it a close family relationship of Clann Gregor.
Originally, the MacKinnons enjoyed extensive lands in Mull, beneath whose mountains Iona lies. But they lost a great part of these to the MacDonald sponsored-MacLeans, although their Chiefs retained their castle of Dunara. Ewen, their chief in the 16th century received from the King a charter to the lands of Meysness and Strathardal. Their principal strongholds were at Dunakin and another at Dunringill.
Their 28th Chief, Sir Lachlan MacKinnon, was knighted by Charles I on the fatal field of Worcester in 1651, before Cromwell destroyed the Scottish army. The clan remained loyal to the Stewarts in the Revolutions of 1688, 1715, and 1745. Its fighting forces were estimated at two hundred at Culloden.
The last of the direct line of the Chiefs of Clan Fingon died in poverty. Francis MacKinnon of MacKinnon, 35th Chief, who resided at Drumduan, near Forres. died in 11947, aged 95. His son, Arthur A. MacKinnon of MacKinnon. is the present chief.