March 26 » Utrecht University is founded in the Netherlands.
April 30 » Eighty Years' War: Dutch Republic forces recapture a strategically important fort from Spain after a nine-month siege.
October 4 » Thirty Years' War: The Swedish Army defeats the armies of Saxony and the Holy Roman Empire at the Battle of Wittstock.
October 28 » The Massachusetts Bay Colony votes to establish a theological college, which would later become Harvard University.
December 13 » The Massachusetts Bay Colony organizes three militia regiments to defend the colony against the Pequot Indians. This organization is recognized today as the founding of the National Guard of the United States.
March 14 » According to his own account, Otto von Guericke completes his book De Vacuo.
March 24 » The Province of Carolina is granted by charter to eight Lords Proprietor in reward for their assistance in restoring Charles II of England to the throne.
June 8 » Portuguese victory at the Battle of Ameixial ensures Portugal's independence from Spain.
June 24 » The Spanish garrison of Évora capitulates, following the Portuguese victory at the Battle of Ameixial.
July 8 » Charles II of England grants John Clarke a Royal charter to Rhode Island.
July 27 » The English Parliament passes the second Navigation Act requiring that all goods bound for the American colonies have to be sent in English ships from English ports. After the Acts of Union 1707, Scotland would be included in the Act.
April 27 » Blind and impoverished, John Milton sells Paradise Lost to a printer for £10, so that it could be entered into the Stationers' Register.
May 24 » The French Royal Army crosses the border into the Spanish Netherlands, starting the War of Devolution opposing France to the Spanish Empire and the Triple Alliance.
June 9 » Second Anglo-Dutch War: The Raid on the Medway by the Dutch fleet begins. It lasts for five days and results in the worst ever defeat of the Royal Navy.
June 14 » The Raid on the Medway by the Dutch fleet in the Second Anglo-Dutch War ends. It had lasted for five days and resulted in the worst ever defeat of the Royal Navy.
June 15 » The first human blood transfusion is administered by Dr. Jean-Baptiste Denys.
November 25 » A deadly earthquake rocks Shemakha in the Caucasus, killing 80,000 people.
When copying data from this family tree, please include a reference to the origin: Rob van Koert, "Family tree Van Koert", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-koert/I5698.php : accessed February 10, 2026), "Geert Hendrik Geerts van Buijtene (1636-1667)".
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