Mary Douglas, Countess of Buchan Peerage person ID=28286 (1600–1628) Parents James Douglas, 5th Earl of Buchan Margaret Ogilvy Children Margaret Erskine Lady Mary Erskine James Erskine, 7th Earl of Buchan Siblings Patrick Gray, Master of Gray Anne Gray, Mistress of Gray Partners James Erskine, 6th Earl of Buchan