Question: What is the date of death of Sarah Baring's husband?
Sentence (from "Sarah Baring"): Sarah Kathleen Elinor Baring (20 January 1920 – 4 February 2013) was an English socialite, who worked as a linguist at Bletchley Park for three years during the war, and married William Astor, 3rd Viscount Astor.
Relevant evidence: Yes