January 16 » Thomas Howard, 4th Duke of Norfolk is tried for treason for his part in the Ridolfi plot to restore Catholicism in England.
July 9 » Nineteen Catholics suffer martyrdom for their beliefs in the Dutch town of Gorkum.
August 18 » Marriage in Paris, France, of the Huguenot King Henry III of Navarre to Margaret of Valois, in a supposed attempt to reconcile Protestants and Catholics.
August 23 » French Wars of Religion: Mob violence against thousands of Huguenots in Paris results in the St. Bartholomew's Day massacre.
October 20 » Eighty Years' War: Three thousand Spanish soldiers wade through fifteen miles of water in one night to effect the relief of Goes.
November 11 » Tycho Brahe observes the supernova SN 1572.
When copying data from this family tree, please include a reference to the origin: T. Kuipers, "Genealogy Kuipers", database, Genealogy Online (https://www.genealogieonline.nl/genealogie_kuipers/I57576.php : accessed June 6, 2024), "Jonkheer Johan van IJsselmuiden (????-< 1601)".
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