May 21 » Ten-year-old Mary Campbell is abducted in Pennsylvania by Lenape during the French and Indian War. She is returned six and a half years later.
June 12 » French and Indian War: Siege of Louisbourg: James Wolfe's attack at Louisbourg, Nova Scotia, commences.
June 23 » Seven Years' War: Battle of Krefeld: British, Hanoverian, and Prussian forces defeat French troops at Krefeld in Germany.
July 8 » French forces hold Fort Carillon against the British at Ticonderoga, New York.
August 25 » Seven Years' War: Frederick II of Prussia defeats the Russian army at the Battle of Zorndorf.
September 11 » Battle of Saint Cast: France repels British invasion during the Seven Years' War.
When copying data from this family tree, please include a reference to the origin: Yvonne Groos, "Family tree Groos", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-groos/I75.php : accessed February 16, 2026), "Johan Martin jonge man van Nasau Dietsche Linnenwever".
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