When copying data from this family tree, please include a reference to the origin: Bas van der Heide, "Family tree De Boer/Hazelhoff/Lukkien/Bos", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-de-boer-hazelhoff-lukkien-bos/I2968.php : accessed June 27, 2024), "Derck Sijgers".
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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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