Question: Who is the paternal grandfather of Robert Petre, 8Th Baron Petre?
Sentence (from "Robert Petre, 7th Baron Petre"): Robert Petre, 7th Baron Petre (1689 – 22 March 1713) was a British peer, the son of Thomas Petre, 6th Baron Petre (1633–1706) and his wife Mary Clifton, daughter of Sir Thomas Clifton.
Relevant evidence: Yes