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.
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.
October 17 » French king Louis XIII is crowned in Reims Cathedral.
February 13 » With the accession of young Charles XI of Sweden, his regents begin negotiations to end the Second Northern War.
May 21 » The Battle of Long Sault concludes after five days in which French colonial militia, with their Huron and Algonquin allies, are defeated by the Iroquois Confederacy.
May 25 » Charles II lands at Dover at the invitation of the Convention Parliament, which marks the end of the Cromwell-proclaimed Commonwealth of England, Scotland and Ireland and begins the Restoration of the British monarchy.
October 17 » The Nine regicides who signed the death warrant of Charles I of England are hanged, drawn and quartered.
November 28 » At Gresham College, twelve men, including Christopher Wren, Robert Boyle, John Wilkins, and Sir Robert Moray decide to found what is later known as the Royal Society.
December 8 » A woman (either Margaret Hughes or Anne Marshall) appears on an English public stage for the first time, in the role of Desdemona in a production of Shakespeare's play Othello.
When copying data from this family tree, please include a reference to the origin: Charles Olson, "Olson's Tree", database, Genealogy Online (https://www.genealogieonline.nl/olsons-tree/P10469.php : accessed January 8, 2026), "William SEYMOUR (1587-1660)".
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