BBC: William III - Biography of the monarch remembered for his association with the Battle of the Boyne. - http://www.bbc.co.uk/history/british/civil_war_revolution/william_iii_01.shtml
William III of England - Wikipedia - Covers the king's early life, reign, battles and death. - http://en.wikipedia.org/wiki/William_III_of_England
William III - Biography for the king of England, Scotland, and Ireland (1689–1702); son of William II, prince of Orange, stadtholder of the United Provinces of the Netherlands, and of Mary, oldest daughter of King Charles I of England. - http://www.factmonster.com/ce6/people/A0852297.html