Plaatsingslijst van het archief van de ambtenaar van de burgerlijke stand Leiden, 19..., Leiden, archief 1005, inventarisnummer 61, 19 februari 1931, Huwelijken 1931, aktenummer 48
When copying data from this family tree, please include a reference to the origin: Johan Jongman, "Family tree Jongman, van Weert, Menger & Kooij", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-jongman-van-weert-menger-kooij/I6008.php : accessed April 28, 2024), "Maria Louise Antoinette Modderman (1906-)".
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