 On the death of the fifth/third Baronet in 1763 the next heir was under attainder and the baronetcies were consequently forfeited.The Mackenzie Baronetcy, of Coul in the County of Ross, was created in the Baronetage of Nova Scotia on 16 October 1673 for Kenneth Mackenzie.His father Alexander Mackenzie of Coul was the illegitimate son of Colin Cam Mackenzie, 11th of Kintail, and half-brother of Kenneth Mackenzie, 1st Lord Mackenzie of Kintail, ancestor of the Earls of Seaforth, and of Sir Roderick Mackenzie, ancestor of the Earls of Cromarty.