When copying data from this family tree, please include a reference to the origin: J.H.Douma, "Family tree Douma", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-douma/I23599.php : accessed March 2, 2026), "Jan Pieters Sjoeks (Pijtters Pytters Sjuck) Allema (1709-> 1769)".
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