Question: Why did Charles Mordaunt, 4Th Earl Of Peterborough's father die?
Sentence (from "Charles Mordaunt, 4th Earl of Peterborough"): He was the son of John Mordaunt, Viscount Mordaunt and Lady Frances Powlett, and succeeded his grandfather, Charles Mordaunt, 3rd Earl of Peterborough in the earldom.
Relevant evidence: Yes