Family tree van der Heiden, Roth, van der Hek, de Groot » Sources » Stadsarchief van Leiden (Stadsbestuur (SA III)) (1816-1929), Deel: 4898, Periode: 1902, Leiden, archief 0516, inventarisnummer 4898, 19 november 1902, Huwelijksakten 1902, aktenummer 368
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