Agnes MacDonald Peerage person ID=42849 (1415–1442) Parents Mariota, Countess of Ross Domhnall of Islay Children Janet Stewart Isabel Stewart Marion Stewart Siblings Alexander of Islay, Earl of Ross Anne of the Isles Angus Macdonald unknown Macdonald unknown son Macdonald Mariotta Macdonald Anna Macdonald Partners John Stewart, 2nd Lord Lorn