Complex sentence: Philip William, Prince of Orange (19 December 1554, Buren, Gelderland--20 February 1618) was the eldest son of William the Silent, who played an important role during the Dutch Revolt, by his first wife Anna van Egmont.
Split into simpler sentences: Philip William, Prince of Orange (19 December 1554, Buren, Gelderland--20 February 1618). He was the eldest son of William the Silent, who played an important role during the Dutch Revolt, by his first wife Anna van Egmont.