William of Jülich, called the Younger (Dutch: Willem van Gulik de Jongere; died August 18, 1304), was one of the Flemish noblemen that opposed the annexation policies of the French king Philip IV, together with Pieter de Coninck.
In 1304 however, the French king returned with an army and defeated the Flemings during the Battle of Mons-en-Pévèle. William died during this battle.[1]