William I, Count of Holland

Count of Holland from 1203 to 1222 (1167–1222)

Parents

• Floris III
• Ada of Huntingdon

Children

• Otto III van Holland
• Ada of Holland
• Floris IV, Count of Holland

Siblings

• Ada of Holland
• Dirk VII, Count of Holland
• Florence of Holland
• Boudewijn
• Agnes van Hollant
• Mechtild zu Styrum
• Margareta van Hollant

Partners

• Adelaide of Guelders
• Maria of Brabant