Question: Who is John Boyle, 5Th Earl Of Cork's paternal grandmother?
Sentence (from "Charles Boyle, 4th Earl of Orrery"): The second son of Roger Boyle, 2nd Earl of Orrery, and his wife Lady Mary Sackville (1647–1710), daughter of Richard Sackville, 5th Earl of Dorset, he was born at Little Chelsea, London.
Relevant evidence: Yes