July 12, 1690
Protestant William of Orange and his forces defeated Catholic James II on this day in 1690 at Battle of the Boyne. William’s victory rendered James II’s attempt to regain the British throne unsuccessful and allowed for a continuation of Protestant ascendancy in Ireland. The battle was fought across the River Boyne near Drogheda. July 12 is also known as “The Twelfth” or “Orange Day” in Belfast.