Question: When did Maurice De Berkeley, 4Th Baron Berkeley's mother die?
Sentence (from "Maurice de Berkeley, 4th Baron Berkeley"): His epithet, and that of each previous and subsequent head of his family, was coined by John Smyth of Nibley (died 1641), steward of the Berkeley estates, the biographer of the family and author of "Lives of the Berkeleys".
Relevant evidence: No