March 8 » John Casor becomes the first legally-recognized slave in England's North American colonies where a crime was not committed.
April 23 » The Siege of Santo Domingo begins during the Anglo-Spanish War, and fails seven days later.
July 31 » Russo-Polish War (1654–67): The Russian army enters the capital of the Grand Duchy of Lithuania, Vilnius, which it holds for six years.
September 8 » Warsaw falls without resistance to a small force under the command of Charles X Gustav of Sweden during The Deluge, making it the first time the city is captured by a foreign army.
December 18 » The Whitehall Conference ends with the determination that there was no law preventing Jews from re-entering England after the Edict of Expulsion of 1290.
December 27 » Second Northern War/the Deluge: Monks at the Jasna Góra Monastery in Częstochowa are successful in fending off a month-long siege.
When copying data from this family tree, please include a reference to the origin: J. Jacobs, "Family tree Jacobs", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_jacobs/I6659.php : accessed January 14, 2026), "Guillielmus Geens".
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