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Child of Hubertus Koopmans and Helena van Houdt Sibling of Johanna Maria Koopmans; Hendrika Koopmans; Maria Koopmans; Antonius Koopmans; Petronella Koopmans and 5 others; Antonius Koopmans; Martinus Koopmans; Petrus Koopmans; Johannes Koopmans and Petronella Koopmans « less