Foundation of Nieuwburg Castle

The successors of Florens V, his son John I and his cousin John of Avesnes (John II) carried over the supervision of the three castles Torenburg Castle, Middelburg and Nieuwburg Castle, to William van der Laen.

All known historical facts of Middelburg Castle and Nieuwburg Castle are extracted from accounts of the Counts of Holland. That is the reason that only isolated independent facts are known. So it is impossible to construct a historical story during the 14th and 15th centuries. Many times, the names of the castles' managers were mentioned. These castellans had a profession which was attended with another high leading position like a servant of law such as bailiff (in Dutch history there are more subtle differences in this kind of professions. They are called: "schout", "baljuw" and "drost").