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
Mary, Queen of Scots marry the queen. Between 21 and 23 April 1567, Mary visited her son at Stirling for the last time. On her way back to Edinburgh on 24 April, Mary was abducted, willingly or not, by Lord Bothwell and his men and taken to Dunbar Castle, where he may have raped her. On 6 May, Mary and Bothwell returned to Edinburgh and on 15 May, at either Holyrood Palace or Holyrood Abbey, they were married according to Protestant rites. Bothwell and his first wife, Jean Gordon, who was the sister of Lord Huntly, had divorced twelve days previously. Originally Mary believed