Lady Mary Keith Peerage person ID=211800 (1544–1592) Parents Margaret Keith William Keith, 4th Earl Marischal Children Sir John Campbell, 4th of Cawdor Beatrix Campbell Siblings Robert Keith, 1st Lord Altrie Lady Johanna Keith Lady Alison Keith Lady Beatrice Keith Agnes Keith, Countess of Moray Lady Barbara Keith William Keith, Master of Marischal Lady Elizabeth Keith Lady Margaret Keith Lady Margaret Keith Partners John Campbell of Cawdor