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.
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.
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.
March 16 » The Long Parliament of England is dissolved so as to prepare for the new Convention Parliament.
April 4 » Declaration of Breda by King Charles II of Great Britain promises, among other things, a general pardon to all royalists for crimes committed during the English Civil War and the Interregnum.
May 29 » English Restoration: Charles II is restored to the throne of England, Scotland and Ireland.
October 17 » The Nine regicides who signed the death warrant of Charles I of England are hanged, drawn and quartered.
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 5, 2026), "William SEYMOUR (1587-1660)".
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