April 1 » In the Eighty Years' War, the Watergeuzen capture Brielle from the Seventeen Provinces, gaining the first foothold on land for what would become the Dutch Republic.
July 9 » Nineteen Catholics suffer martyrdom for their beliefs in the Dutch town of Gorkum.
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.
December 23 » Theologian Johann Sylvan is executed in Heidelberg for his heretical Antitrinitarian beliefs.
When copying data from this family tree, please include a reference to the origin: Keith Swartz, "Swartz/Rand Family Tree", database, Genealogy Online (https://www.genealogieonline.nl/swartz-rand-family-tree/I88903522.php : accessed May 9, 2025), "John SYMONS (1514-1542)".
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