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.
June 5 » The masque Tethys' Festival is performed at Whitehall Palace to celebrate the investiture of Henry Frederick, Prince of Wales.
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.
When copying data from this family tree, please include a reference to the origin: Gilbert Pene, "Arbre Pene", database, Genealogy Online (https://www.genealogieonline.nl/arbre-pene/I4248.php : accessed March 2, 2026), "Izabeau DUMAS (????-< 1623)".
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