Johanna Maria Catharina van Westerborg was a daughter of Henri van Westerborg and Adèle Baum.
Haags Gemeentearchief, overlijdensakte Johanna Maria Catharina van Westerborg (c 407, 1950)
This person is mentioned in a CABR document of the Dutch Nationaal Archief. The CABR contains detailed information concerning this person’s arrest, inv. nr CABR 57602 + 482.