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
Church of St Mary and All Saints, Fotheringhay with all remaining chantries and colleges. The chancel was pulled down immediately after the college was granted to John Dudley, 1st Duke of Northumberland by King Edward VI. A grammar school was founded in its place which lasted until 1859. Nearby Fotheringhay Castle was the principal home of two Dukes of York. Edward of Norwich, 2nd Duke of York, who was killed at the Battle of Agincourt in 1415 was buried in the church. He had earlier established a college for a master and twelve chaplains at the location. Edward's burial provided the basis for the later adoption of the