When copying data from this family tree, please include a reference to the origin: Elsevier - Elzevier, "Descendants Louis Elsevier e.a.", database, Genealogy Online (https://www.genealogieonline.nl/nakomelingen-louis-elsevier/I11214.php : accessed May 30, 2024), "Maria Gerarda Joanna BARTELS (± 1853-1894)".
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