William I, Count of Hainaut
My 20th Great Grandfather

Born: 1286, Avesnes, Nord-Pas-de-Calais, France
Died: 7 June 1337, Valenciennes, Hainaut*

Father: John II, Count of Hainaut
Mother: Philippa of Luxembourg

Wife: Joan of Valois, Countess of Hainaut
Children: Philippa of Hainault

*The medieval territory of Hainault included land that falls within current day Belgium and France. William died in the city of Valenciennes, which falls into the territory of modern day France.