Question: What is the date of death of Maria Molyneux, Countess Of Sefton's husband?
Sentence (from "William Molyneux, 2nd Earl of Sefton"): William Philip Molyneux, 2nd Earl of Sefton (18 September 1772 – 20 November 1838), also known as Lord Dashalong, was a sportsman, gambler and a friend of the Prince Regent.
Relevant evidence: Yes