When copying data from this family tree, please include a reference to the origin: Henny Alsemgeest, "Genealogy familie Alsemgeest", database, Genealogy Online (https://www.genealogieonline.nl/genealogie-familie-alsemgeest/I10740.php : accessed June 13, 2024), "Dirk I van Voorne (????-± 1189)".
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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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