Domhnall of Islay Lord of the Isles and chief of the Scottish Clan Donald (1301–1423) Parents Margaret Stewart John of Islay Children Agnes MacDonald Anne of the Isles unknown Macdonald Alexander of Islay, Earl of Ross Anna Macdonald Mariotta Macdonald Angus Macdonald unknown son Macdonald Siblings John Mór Tanister Agnes of the Isles Elizabeth MacDonald Mary MacDonald Hugh MacDonald, Thane of Glen Tilt Angus MacDonald Alistair Carragh Macdonald Marcus MacDonald Ranald MacDonald Elizabeth Macdonald Iain Macdonald Godfrey Macdonald Partners Mariota, Countess of Ross