He was born in The Hague, a son of William I of Holland and his first wife, Adelaide of Guelders.
He had constant disputes with the bishop of Utrecht, Otto II of Lippe, but helped him against the peasants of Drenthe in 1227.
[1] Floris married, before 6 December 1224, his step-aunt Matilda, daughter of Duke Henry I of Brabant.
[2] They had five children: This biography of a member of a European royal house is a stub.
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