schatting op 5 jaar nauwkeurig op basis van geboorte oudste kind; vrouwen gemiddeld 25 jaar, mannen gemiddeld 30 EN/OF geboortedatum partner; mannen gemiddeld 5 jaar ouder dan vrouwen EN/OF trouwdatum
When copying data from this family tree, please include a reference to the origin: Pauline Berens EBBI, "Sibling Greetje Berens' genealogy network f k a Emsland Buckwheat Farmers Immigration", database, Genealogy Online (https://www.genealogieonline.nl/the-dutch-connection/I9530.php : accessed May 4, 2024), "Jan Janze Mars (1685-????)".
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