Question: What is the date of death of Mary Capel, Countess Of Essex's father?
Sentence (from "Mary Capel, Countess of Essex"): Mary Capel, Countess of Essex (1679 – 20 August 1726), born Lady Mary Bentinck, was the daughter of William Bentinck, 1st Earl of Portland, a Dutch and English nobleman who became in an early stage the favourite of stadtholder William, Prince of Orange (the future King of England) and his wife Anne Villiers (died 30 November 1688).
Relevant evidence: Yes