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References

  1. Rechtbank Rotterdam Civil registry Rechtbank RotterdamRotterdamBirth record for Grietje Cornelia den Ouden, civil registry of births, Rechtbank Rotterdam, 1912-07-01, record 6506
  2. Gemeente Rotterdam Burgerlijke Stand RotterdamRotterdamExtract of the marriage record for Nijs den Ouden & Catharina Kamhoot, civil registry of marriages, Rotterdam, 1907-01-03Accessed February 8, 2020