Question: Who is the paternal grandmother of Frances Crewe, Lady Crewe?
Sentence (from "Fulke Greville (1717–1806)"): Fulke Greville (1717–1806) of Wilbury House, Newton Toney, Wiltshire, England, was the son of Algernon Greville and Mary Somerset, daughter and coheiress of Lord Arthur Somerset, the youngest son of Henry Somerset, 1st Duke of Beaufort.
Relevant evidence: Yes