February 6 » American Revolutionary War: In Paris the Treaty of Alliance and the Treaty of Amity and Commerce are signed by the United States and France signaling official recognition of the new republic.
February 9 » Rhode Island becomes the fourth US state to ratify the Articles of Confederation.
June 28 » American Revolutionary War: The American Continentals engage the British in the Battle of Monmouth Courthouse resulting in standstill and British withdrawal under cover of darkness.
July 10 » American Revolution: Louis XVI of France declares war on the Kingdom of Great Britain.
July 27 » American Revolution: First Battle of Ushant: British and French fleets fight to a standoff.
November 26 » In the Hawaiian Islands, Captain James Cook becomes the first European to visit Maui.
Day of death April 28, 1780
The temperature on April 28, 1780 was about 12.0 °C. There was 22 mm of rainWind direction mainly south-southwest. Weather type: zeer betrokken regen. Source: KNMI
January 16 » American Revolutionary War: Battle of Cape St. Vincent.
May 12 » American Revolutionary War: In the largest defeat of the Continental Army, Charleston, South Carolina is taken by British forces.
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.
August 16 » American Revolutionary War: Battle of Camden: The British defeat the Americans near Camden, South Carolina.
August 22 » James Cook's ship HMSResolution returns to England (Cook having been killed on Hawaii during the voyage).
November 5 » French-American forces under Colonel LaBalme are defeated by Miami Chief Little Turtle.
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The Family tree Van Willigen publication was prepared by Rob van Willigen (contact is not possible).
When copying data from this family tree, please include a reference to the origin: Rob van Willigen, "Family tree Van Willigen", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-willigen/I9455.php : accessed January 29, 2026), "Willemijntje van Os (1778-1780)".
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