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Daughter of Gerhardus Rudolf Christiaan Posthumus, b2 and Anna Maria Posthumus Wife of Piet Kemp Sister of Johanna Christina Reinierse, 6; Gerhardus Rudolph Posthumus, 4; Jan Johannes Posthumus, 1; Johannes Lodewyk Posthumus, 2; Petrus Jacobus Posthumus, 3 and 1 other; and Christiaan Josias Posthumus, 7 « less