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- [S1] FamilySearch Family Tree, https://www.myheritage.com/research/record-40001-63895983/gertrude-hegeman-born-onderdonk-in-familysearch-family-tree.
Gertrude Hegeman (born Onderdonk)<br>Birth name: Geertruy Onderdonck<br>Gender: Female<br>Birth: Aug 22 1713 - Jamaica, Queens, New York, United States<br>Marriage: Nov 4 1732<br>Death: Feb 21 1785 - Manhasset, Nassau, New York, United States<br>Burial: 1785 - Port Washington, Nassau, New York, United States of America<br>Parents: <a>Judge Andries Onderdonk</a>, <a>Gertruey Onderdonk (born Lott)</a><br>Husband: <a>Jacobus Hegeman</a><br>Children: <a>Daniel Hegeman</a>, <a>Elbert Hegeman</a>, <a>Geertruy Hegeman</a>, <a>Andries Hegeman</a><br>Siblings: <a>Annatie Onderdonk</a>, <a>Sarah Dodge (born Onderdonk)</a>, <a>Peter Onderdonk</a>, <a>Hendrick Onderdonk</a>, <a>Adreyean Onderdonk</a>, <a>Maria Monfoort (born Onderdonk)</a>, <a>Dorothy Hegeman (born Onderdonk)</a>, <a>Catherine Hegeman (born Onderdonk)</a>, <a>Andries Onderdonk</a>
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