March 8 » Johannes Kepler discovers the third law of planetary motion.
May 15 » Johannes Kepler confirms his previously rejected discovery of the third law of planetary motion (he first discovered it on March 8 but soon rejected the idea after some initial calculations were made).
May 23 » The Second Defenestration of Prague precipitates the Thirty Years' War.
June 14 » Joris Veseler prints the first Dutch newspaper Courante uyt Italien, Duytslandt, &c. in Amsterdam (approximate date).
July 31 » Maurice, Prince of Orange disbands the waardgelders militia in Utrecht, a pivotal event in the Remonstrant/Counter-Remonstrant tensions.
September 18 » The twelfth baktun in the Mesoamerican Long Count calendar begins.
When copying data from this family tree, please include a reference to the origin: Lieve Van Vlasselaer, "Family tree Van Vlasselaer en aanverwanten", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-vlasselaer-rietjens-artois-de-schrijver/I7226.php : accessed May 29, 2024), "Joannis Beckers (????-1662)".
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