As ruler of Flanders, Brabant, Limburg, Artois, Hainaut, Holland, Zeeland, Friesland and Namur, he played an important role in the history of the Low Countries.
Selain itu, sebagai penguasa Flandria, Brabant, Limburg, Artois, Hainaut, Holland, Zeeland, Friesland, dan Namur, ia memainkan peran penting dalam sejarah Negeri-Negeri Rendah.