 His son was Zachary MacCallum who was educated at the University of St Andrews and was also a noted swordsman.Zachary's younger brother was Duncan whose son, Neil MacCallum served in the French Navy and is said to have been the natural father of Louis-Joseph de Montcalm.Zachary was a supporter of the Marquess of Argyll and he was killed in 1647 by forces of Sir Alexander MacDonald at Ederline.