Question: What is the date of death of Maria Molyneux, Countess Of Sefton's husband?
Sentence (from "Maria Molyneux, Countess of Sefton"): Maria Molyneux, Countess of Sefton (26 April 1769 – 9 March 1851), was the wife of William Molyneux, 2nd Earl of Sefton.
Relevant evidence: Yes