Question: Who is Mervyn Tuchet, 2Nd Earl Of Castlehaven's paternal grandmother?
Sentence (from "Mervyn Tuchet, 2nd Earl of Castlehaven"): A son of George Tuchet, 1st Earl of Castlehaven and 11th Baron Audley, by his wife, Lucy Mervyn, he was known by the courtesy title of Lord Audley during his father's lifetime, so is sometimes referred to as Mervyn Audley.
Relevant evidence: Yes