Margaret married Archibald Campbell, 1st Marquess of Argyll on 7 Aug 1626. Archibald (son of Archibald Campbell, 7th Earl of Argyll and Agnes Douglas) was born in 1597; died on 25 May 1661 in Edinburgh, Scotland. [Group Sheet] [Family Chart]
Mary married George Sinclair, 6th Earl of Caithness on 22 Sep 1657 in Roseneath, Dunbarton, Scotland. George (son of John Sinclair, Master of Berriedale and Jean MacKenzie) died in May 1676 in Thurso Castle, Thurso, Caithness, Scotland. [Group Sheet] [Family Chart]