Question: Who is the paternal grandmother of David Wemyss, 2Nd Earl Of Wemyss?
Sentence (from "John Wemyss, 1st Earl of Wemyss"): He married Jane Gray (daughter of Patrick Gray and his second wife, Mary Stewart, daughter of Robert Stewart, 1st Earl of Orkney, the King's uncle) and was succeeded by his only son, David, the second Earl.
Relevant evidence: Yes