William III: 'Royal.gov.uk'
William of Orange (part of what is now known as the Netherlands) had a double connection with the royal house of Stuart, for he was the son of Princess Mary, daughter of Charles I, and he married his cousin, another Princess Mary, the daughter of James VII and II (by his Protestant first wife Anne Hyde). William was a delicate, posthumous child, whose father had died a few days before his birth, but he grew up determined to defend his country against the threat from France on his southern border. He led his army in person, and carefully built up the Grand Alliance against the French.
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William III: 'Britannia.com'
Mary II, born in 1662, was the daughter of James II and Anne Hyde. She was married to William of Orange as a matter of Charles II's foreign policy; she and William had no children. Mary died of smallpox in 1694. William III (William of Orange), born in 1650, was the son of William, Prince of Orange, and Mary Stuart (daughter of Charles I). Husband and wife were also first cousins, both being a grandchild of Charles I. William, one of the most significant players on the continent, constantly strove to spread Protestantism and decrease the Catholic influence of France and Spain. He died in 1702 from complications after being thrown from his horse.
[http://www.britannia.com/]
William III: William of Orange
Posthumous son of William II of Orange ruler of the United Netherlands. Married Mary daughter of James duke of York 1677. Short,asthmatic,stooped bad teeth and beaked nose. His family:Nassau was unhealthy and suffered from mysterious fevers of a tubeercular nature. Wiilliam was always weak and had a constant consumptive cough. His face was sullen and bloodless and scored with the deep lines which were the product of fighting ceaseles pain. He could not handle a horse or sword until full grown. His success in life came from the care he took to eat simply,drink little and obtain plenty of sleep. None the less he overcame all of these physical setbacks to present a dashing and inspiring figure on horseback in the thick of the fight.
[http://www.bcpl.net/]
William III: 'Infoplease.com'
William of Orange, King of Great Britain and Ireland from 1688, the son of William II of Orange and Mary, daughter of Charles I. He was offered the English crown by the parliamentary opposition to James II. He invaded England 1688 and in 1689 became joint sovereign with his wife, Mary II. He spent much of his reign campaigning, first in Ireland, where he defeated James II at the battles of the Boyne 1690, and later against the French in Flanders. He was succeeded by Anne.
[http://www.infoplease.com/]