Question: Who is Henry Cavendish, Earl Of Ogle's paternal grandmother?
Sentence (from "Henry Cavendish, Earl of Ogle"): Henry, Earl of Ogle, is remembered mainly for his short-lived marriage to Lady Elizabeth Percy, daughter of the last Earl of Northumberland and the greatest heiress of her time; she was only twelve when they married and was widowed a year later.
Relevant evidence: No