John Stewart, Earl of Mar (December 147911 March 1503) was the youngest son of James III of Scotland and Margaret of Denmark. Biography He was born at Dunfermline Palace in Fife as the youngest son of the King. He was created Earl of Mar on 2 March 1486, at the age of eight. Not much is known of his life and he died in Scotland on 11 March 1503. As he died unmarried, the earldom became extinct and James IV awarded many of the Mar lands to Lord Elphinstone. Family Stewart had two brothers, King James IV and James Stewart, Duke of Ross. He died unmarried. Ancestry References John Earls or mormaers of Mar Scottish princes 1470s births 1503 deaths 15th-century Scottish peers 16th-century Scottish peers Peers created by James III Sons of kings