Question: Who is the paternal grandfather of Charles Mordaunt, 3Rd Earl Of Peterborough?
Sentence (from "John Mordaunt, 1st Viscount Mordaunt"): He was born in Lowick, Northamptonshire, the second son of John Mordaunt, 1st Earl of Peterborough and Elizabeth Howard (d. 1671), daughter of William Howard, 3rd Baron Howard of Effingham.
Relevant evidence: Yes