Complex sentence: However, the Prince of Orange, starting with William I of Orange, became de facto hereditary stadtholders in Holland and Zeeland, and in practice they usually became stadtholder of the other provinces as well.
Split into simpler sentences: However, the Prince of Orange, starting with William I of Orange, became de facto hereditary stadtholders in Holland and Zeeland. In practice they usually became stadtholder of the other provinces as well.