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
Dungannon Castle walls of the castle. Dungannon Castle Dungannon Castle was a castle at Dungannon, County Tyrone, Northern Ireland. In 1305 a castle was built there by Domnall O'Neill, on what is today known as Castle Hill, one of the highest points in the area, which dominated the surrounding countryside with the ability to see seven counties depending on the weather. During the 15th century a tower house was known to have been constructed upon the site. Conn Mor O'Niell was in residence during 1483, and in 1559 Shane O'Neill burnt the castle to prevent use by English forces. The O'Donnells demolished