berube, there were two noblemen known as William of Orange.  The one who grew up speaking French was the first one, who died in 1584.  The William of Orange still revered in protestant Northern Ireland today is, of course, the one who won the Battle of the Boyne, became William III of England, and died in 1702.  And yes, the Comte de Schonberg fought for him and died at the Boyne.  Both of them were very, very, protestant.  

The Orange Lodges which became the centre of anti-Catholicism were named after him. In Canada, for obvious reasons, they were also anti-French.  For instance, they were front and centre in the charge to see Louis Riel hang for treason, and in keeping French education out of Ontario.