February 14 » James Cook is killed by Native Hawaiians near Kealakekua on the Island of Hawaii.
March 3 » American Revolutionary War: The Continental Army is routed at the Battle of Brier Creek near Savannah, Georgia.
May 13 » War of the Bavarian Succession: Russian and French mediators at the Congress of Teschen negotiate an end to the war. In the agreement Austria receives the part of its territory that was taken from it (the Innviertel).
June 1 » The court-martial for malfeasance of Benedict Arnold, a general in the Continental Army during the American Revolutionary War, begins.
June 16 » Spain declares war on the Kingdom of Great Britain, and the Great Siege of Gibraltar begins.
September 16 » American Revolutionary War: The Franco-American Siege of Savannah begins.
Day of death 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.
April 16 » Franz Friedrich Wilhelm von Fürstenberg founds the University of Münster.
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.
September 23 » American Revolution: British Major John André is arrested as a spy by American soldiers exposing Benedict Arnold's change of sides.
October 10 » The Great Hurricane of 1780 kills 20,000–30,000 in the Caribbean.
November 4 » The Rebellion of Túpac Amaru II against Spanish rule in the Viceroyalty of Peru begins.
When copying data from this family tree, please include a reference to the origin: Charles Olson, "Olson's Tree", database, Genealogy Online (https://www.genealogieonline.nl/olsons-tree/P26499.php : accessed April 30, 2025), "Mary Webb (1779-1780)".
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