Check the information Open Archives has about Jonker.
Check the Wie (onder)zoekt wie? register to see who is (re)searching Jonker.
The Family tree Verhoeve publication was prepared by Marco Verhoeve (contact is not possible).
When copying data from this family tree, please include a reference to the origin: Marco Verhoeve, "Family tree Verhoeve", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-verhoeve/R545.php : accessed February 15, 2026), "Ide Jonker".
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Please stick to the following rules
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.
Do not use this data until you have checked it, preferably at the source (the archives).
State from whom you have copied the data and ideally also his/her original source.