Question: What is the date of death of William Fitz Robert, 2Nd Earl Of Gloucester's mother?
Sentence (from "George Gordon, 15th Earl of Sutherland"): On 11 Aug 1659 he married Lady Jean Wemyss, daughter of David Wemyss, 2nd Earl of Wemyss, and his first wife Anna Balfour.
Relevant evidence: No