William II was the Count of Holland and Zeeland from 1234 until his death. He was elected anti-king of Germany in 1248 and ruled as sole king from 1254 onwards. Wikipedia
Born: February 1227, 's-Hertogenbosch, Netherlands
Died: January 28, 1256 (age 28 years), Hoogwoud, Netherlands
Great grandchildren: Floris I van Haamstede, Hendrik II van Montfoort, Arent I van Haamstede, and more
Grandchildren: John I, Count of Holland, Witte van Haemstede, Margaretha of Holland, and more
Grandparents: William I, Count of Holland, Henry I, Duke of Brabant, Adelaide of Guelders, and more
Children: Floris V, Count of Holland