February 17 » In Sweden February 17 is followed by March 1 as the country moves from the Julian calendar to the Gregorian calendar.
May 1 » Publication of Species Plantarum by Linnaeus, and the formal start date of plant taxonomy adopted by the International Code of Botanical Nomenclature.
When copying data from this family tree, please include a reference to the origin: MMJ Meijer Ettema, "Family tree Wester / Schoonenberg Beverwijk", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-wester-schoonenberg/I51.php : accessed February 19, 2026), "Aaltje Crelis (± 1705-????)".
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