Marion Mor Campbell

https://en.wikipedia.org/wiki/Red_Hector_of_the_Battles_Maclean

Hector Roy's marriage to a daughter of the Earl of Douglas (either Archibald the Third or Fourth Earl of Douglas) greatly enlarged his influence. That nobleman made many overtures to induce Hector to withdraw himself from his dangerous connection with his uncle Domhnall of Islay, Lord of the Isles and Earl of Ross, now on the brink of open war with Robert, Duke of Albany and regent of the kingdom. Hector firmly withstood the blandishments of his father-in-law, for his duty as hereditary Lieutenant-General of the Isles was to his uncle Donald, and the approaching contest afforded a new field for the display of his valor.[1]