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 37298 + 76533.
Philippus Henri Knorringa and Elisabeth Vlessing married in 1915 on Texel.
Addition of a visitor of the website
In addition, a Jokos file (number 31777) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.