Question: Who is Mary, Countess Of Harold's paternal grandfather?
Sentence (from "Thomas Tufton, 6th Earl of Thanet"): He was the fourth son of John Tufton, 2nd Earl of Thanet and his wife Margaret Sackville, Baroness Clifford and inherited the title on the death in 1684 of his elder brother Richard Tufton, 5th Earl of Thanet.
Relevant evidence: Yes