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.
March 15 » Charles II of England issues the Royal Declaration of Indulgence.
May 2 » John Maitland becomes Duke of Lauderdale and Earl of March.
May 5 » In preparation for the Franco-Dutch War, Louis XIV of France personally inspects his troops at Charleroi in one of the most magnificent displays of military power in the seventeenth century.
August 20 » Former Grand Pensionary Johan de Witt and his brother Cornelis are lynched by an angry mob in The Hague.
When copying data from this family tree, please include a reference to the origin: Scott Jeffrey, "Jeffro Family Tree", database, Genealogy Online (https://www.genealogieonline.nl/jeffro-family-tree/I322386478502.php : accessed May 3, 2025), "richard dickenson (1618-1672)".
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