When copying data from this family tree, please include a reference to the origin: Kees Koek, "Koek en enkele aanverwante families", database, Genealogy Online (https://www.genealogieonline.nl/genealogie-koek/I18284.php : accessed June 8, 2024), "Martinus Onderwater (????-> 1812)".
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Please stick to the following rules
Request permission to copy data or at least inform the author, chances are that the author gives permission, often the contact also leads to more exchange of data.
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