January 24 » During the Seven Years' War the leading burghers of Königsberg submit to Elizabeth of Russia, thus forming Russian Prussia (until 1763).
February 4 » The city of Macapá in Brazil is founded by Sebastião Veiga Cabral.
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 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.
October 14 » Seven Years' War: Frederick the Great suffers a rare defeat at the Battle of Hochkirch.
Day of marriage May 9, 1780
The temperature on May 9, 1780 was about 17.0 °C. Wind direction mainly southwest. Weather type: zeer betrokken. Source: KNMI
January 16 » American Revolutionary War: Battle of Cape St. Vincent.
March 17 » American Revolution: George Washington grants the Continental Army a holiday "as an act of solidarity with the Irish in their fight for independence".
May 13 » The Cumberland Compact is signed by leaders of the settlers in the Cumberland River area of what would become the U.S. state of Tennessee, providing for democratic government and a formal system of justice.
September 11 » American Revolutionary War: Sugarloaf Massacre: A small detachment of militia from Northampton County are attacked by Native Americans and Loyalists near Little Nescopeck Creek.
October 2 » American Revolutionary War: John André, a British Army officer, is hanged as a spy by the Continental Army.
October 7 » American Revolutionary War: American militia defeat royalist irregulars led by British major Patrick Ferguson in South Carolina.
When copying data from this family tree, please include a reference to the origin: J. van Broekhoven, "Database Van Broekhoven", database, Genealogy Online (https://www.genealogieonline.nl/database-van-broekhoven/I4956.php : accessed February 4, 2026), "Cornelis Bal (1758-????)".
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