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 or translated into English, do not form a complete set. There are incomplete printed transcriptions in English, Scots, French, and Latin from the 1570s. Other documents scrutinised included Bothwell's divorce from Jean Gordon. Moray had sent a messenger in September to Dunbar to get a copy of the proceedings from the town's registers. Mary's biographers, such as Antonia Fraser, Alison Weir, and John Guy, have come to the conclusion that either the documents were complete forgeries, or incriminating passages were inserted into genuine letters, or that the letters were written to Bothwell by some other person or by Mary to