January 7 » Galileo Galilei makes his first observation of the four Galilean moons: Ganymede, Callisto, Io and Europa, although he is not able to distinguish the last two until the following day.
May 14 » Henry IV of France is assassinated by Catholic zealot François Ravaillac, and Louis XIII ascends the throne.
July 4 » The Battle of Klushino is fought between forces of the Polish–Lithuanian Commonwealth and Russia during the Polish–Muscovite War.
July 5 » John Guy sets sail from Bristol with 39 other colonists for Newfoundland.
August 2 » During Henry Hudson's search for the Northwest Passage, he sails into what is now known as Hudson Bay.
August 9 » The First Anglo-Powhatan War begins in colonial Virginia.
March 8 » Treaty of Roskilde: After a devastating defeat in the Northern Wars (1655–1661), Frederick III, the King of Denmark–Norway is forced to give up nearly half his territory to Sweden to save the rest.
June 3 » Pope Alexander VII appoints François de Laval vicar apostolic in New France.
June 25 » Spanish forces fail to retake Jamaica at the Battle of Rio Nuevo during the Anglo-Spanish War.
July 31 » Aurangzeb is proclaimed Mughal emperor of India.
September 3 » The death of Oliver Cromwell; Richard Cromwell becomes Lord Protector of England.
October 29 » Second Northern War: Naval forces of the Dutch Republic defeat the Swedes in the Battle of the Sound.
When copying data from this family tree, please include a reference to the origin: Bernard Vermeersch, "Family tree familie Leys", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-leys/I1793.php : accessed January 18, 2026), "Michaeèl van COYLDE (1565-1658)".
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