Question: When did Billa Harrod's husband die?
Sentence (from "Billa Harrod"): Wilhelmine Margaret Eve "Billa" Harrod ("née" Cresswell, 1 December 1911 – 9 May 2005), was a British writer and architectural conservationist, best known for saving the mediaeval churches of Norwich, and the wife of the economist Sir Roy Harrod.
Relevant evidence: Yes