Margaret Sinclair Peerage person ID=24984 (1344–1361) Parents Alice de Fenton Henry Sinclair of Roslin, 7th Baron of Roslin Children Sir Walter St. Clair James St. Clair Thomas Stewart, 3rd Earl of Angus John St. Clair of Herdmanston Elizabeth Stewart Margaret Stewart, Countess of Angus Siblings William Sinclair John Sinclair Partners Sir John St. Clair of Herdmanston Thomas Stewart, 2nd Earl of Angus