Question: What is the date of death of Jestyn Philipps, 2Nd Viscount St Davids's mother?
Sentence (from "Jestyn Philipps, 2nd Viscount St Davids"): Jestyn Reginald Austin Plantagenet Philipps, 2nd Viscount St Davids , (19 February 1917 – 10 June 1991) was a British peer, the only surviving son of John Philipps, 1st Viscount St Davids, and his second wife, Elizabeth Philipps, Viscountess St Davids (née Abney-Hastings).
Relevant evidence: Yes