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 Mary, Queen of Scots Mary, Queen of Scots (8 December 1542 – 8 February 1587), also known as Mary Stuart or Mary I of Scotland, reigned over Scotland from 14 December 1542 to 24 July 1567. Mary, the only surviving legitimate child of King James V, was six days old when her father died and she acceded to the throne. She spent most of her childhood in France while Scotland was ruled by regents, and in 1558, she married the Dauphin of France, Francis. He ascended the French throne as King Francis II in 1559, and Mary briefly became queen