0725514 Hendrik Ydo Wittenzn., ambachtsheer in de Zwijndrechtsewaard, vermeld samen met zijn broer Schiltman 15-09-1311. Zij waren de naamgevers van Hendrik-Ido-Ambacht en Schildmanskinderenambacht en kregen van Hendrik van Brederode de titel ambachtsheer en een deel van de Zwijndrechtse waard in leen omdat zij, samen met 7 anderen, waaronder Daniel en Arnold van Kijfhoek, de bedijking van deze waard financierden (1331). Geh. met:
When copying data from this family tree, please include a reference to the origin: Peter Elderson, "Family tree Elderson", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-elderson/I568874.php : accessed January 7, 2026), "Hendrik Ydo Wittenzn".
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