William FitzWilliam (Lord Deputy) William FitzWilliam (Lord Deputy) Sir William FitzWilliam (1526–1599) was an English Lord Justice of Ireland and afterwards Lord Deputy of Ireland. In 1587, as Governor of Fotheringhay Castle, he supervised the execution of the death sentence on Mary, Queen of Scots. He was the Member of Parliament for Peterborough and represented County Carlow in the Irish House of Commons. He lived at Gainspark, Essex, and Milton Hall. FitzWilliam was born at Milton Hall, Northamptonshire, the eldest son of Sir William (d. 1576) and grandson of William Fitzwilliam, Sheriff of London, who had been treasurer and chamberlain to Cardinal Wolsey and
Fotheringhay servant and later protégé in the Admiralty). Hewer himself died without issue on 6 November 1728, when it passed to Hewer's heirs, the Blackborne family. In 1797 Samuel Pepys's great-great-nephew Samuel Pepys Cockerell sold the estate of Rev. Abraham Blackborne in Fotheringhay. Eventually the lordship of the manor and castle came to the Belsey family. After the manor came into the possession of Edward III he passed it to his son Edmund of Langley, 1st Duke of York, founder of the Yorkist line. The castle then became the home of the Dukes of York. Richard III was born there in