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 the Scottish alliance with France. Beaton wanted to move Mary away from the coast to the safety of Stirling Castle. Regent Arran resisted the move, but backed down when Beaton's armed supporters gathered at Linlithgow. The Earl of Lennox escorted Mary and her mother to Stirling on 27 July 1543 with 3,500 armed men. Mary was crowned in the castle chapel on 9 September 1543, with "such solemnity as they do use in this country, which is not very costly" according to the report of Ralph Sadler and Henry Ray. Shortly before Mary's coronation, Scottish merchants headed for France were