When copying data from this family tree, please include a reference to the origin: Richard Remmé, "Genealogy Richard Remmé, The Hague, Netherlands", database, Genealogy Online (https://www.genealogieonline.nl/genealogie-richard-remme/I45505.php : accessed August 5, 2025), "Hendrik van Os Gerritssoen van Amstel (????-1400)".
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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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