Question: Who is John Tuchet, 8Th Earl Of Castlehaven's paternal grandmother?
Sentence (from "John Tuchet, 8th Earl of Castlehaven"): John Talbot Tuchet, 8th Earl of Castlehaven (2 August 1724 – 22 April 1777) was the son of James Tuchet, 6th Earl of Castlehaven, and his wife, née Elizabeth Arundell.
Relevant evidence: Yes