Question: Who is the paternal grandmother of Mary Grey, Baroness Grey De Wilton?
Sentence (from "Mary Grey, Baroness Grey de Wilton"): Mary Somerset, Baroness Grey de Wilton was born in 1497 to Charles Somerset, 1st Earl of Worcester and his second wife, Elizabeth West, daughter of Thomas West, 8th Baron De La Warr and Elizabeth Mortimer, daughter of Sir Hugh Mortimer of Mortimer's Hall.
Relevant evidence: Yes