May 18 » In Dorchester, Massachusetts, John Winthrop takes the oath of office and becomes the first Governor of Massachusetts.
May 20 » The city of Magdeburg in Germany is seized by forces of the Holy Roman Empire and most of its inhabitants massacred, in one of the bloodiest incidents of the Thirty Years' War.
June 17 » Mumtaz Mahal dies during childbirth. Her husband, Mughal emperor Shah Jahan I, will spend the next 17 years building her mausoleum, the Taj Mahal.
June 20 » The Sack of Baltimore: The Irish village of Baltimore is attacked by Algerian pirates.
September 17 » Sweden wins a major victory at the Battle of Breitenfeld against the Holy Roman Empire during the Thirty Years' War.
October 10 » Thirty Years' War: An army of the Electorate of Saxony seizes Prague.
February 17 » Sixteen men of Pascual de Iriate's expedition are lost at Evangelistas Islets at the western end of the Strait of Magellan.
June 1 » Battle of Öland: allied Danish-Dutch forces defeat the Swedish navy in the Baltic Sea, during the Scanian War (1675–79).
June 2 » Franco-Dutch War: France ensured the supremacy of its naval fleet for the remainder of the war with its victory in the Battle of Palermo.
July 30 » Nathaniel Bacon issues the "Declaration of the People of Virginia", beginning Bacon's Rebellion against the rule of Governor William Berkeley.
September 19 » Jamestown is burned to the ground by the forces of Nathaniel Bacon during Bacon's Rebellion.
November 21 » The Danish astronomer Ole Rømer presents the first quantitative measurements of the speed of light.
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The Family tree De Keyser publication was prepared by Guido de Keyser (contact is not possible).
When copying data from this family tree, please include a reference to the origin: Guido de Keyser, "Family tree De Keyser", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-de-keyser/I5961.php : accessed May 13, 2024), "(Willem) Caels Willem (± 1603-1676)".
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