Question: Who is James Tuchet, 3Rd Earl Of Castlehaven's paternal grandmother?
Sentence (from "James Tuchet, 3rd Earl of Castlehaven"): James Tuchet, 3rd Earl of Castlehaven (c. 1617 – 11 October 1684) was the son of Mervyn Tuchet, 2nd Earl of Castlehaven and his first wife, Elizabeth Barnham (1592 – c. 1622).
Relevant evidence: Yes