On July 12th 1690 Stadtholder William III defeated his father-in-law James II in the battle of the Boyne in Ireland. Ever since Orange marches are being held bij Irish Protestants on the 12th of July, in commemoration of King Billy and the Protestant victory.
A year earlier William had been crowned king of England, together with his wife Mary Stuart II, daughter of James. The Protestant oppponents of the Catholic King had called him to the English throne. Together the Dutch and the English Protestants would be able to defeat the Catholic French.
William was a good military commander. It turned out as he had hoped. The Netherlands and England combined defeated the French. And King Billy defeated the English Catholics.
Mary and William were crowned on condition that they respect the power of Parliament. A position the English House has never since given up.
In 'The Orange Rose' author Noel Ross-Russell paints a fine picture of the atmosphere and the feelings of the Dutch and the English towards their Stadtholder-King.