January 18 » James Cook is the first known European to discover the Hawaiian Islands, which he names the "Sandwich Islands".
February 9 » Rhode Island becomes the fourth US state to ratify the Articles of Confederation.
February 14 » The United States flag is formally recognized by a foreign naval vessel for the first time, when French Admiral Toussaint-Guillaume Picquet de la Motte renders a nine gun salute to USSRanger, commanded by John Paul Jones.
July 10 » American Revolution: Louis XVI of France declares war on the Kingdom of Great Britain.
August 29 » American Revolutionary War: British and American forces battle indecisively at the Battle of Rhode Island.
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
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 12 » American Revolutionary War: In the largest defeat of the Continental Army, Charleston, South Carolina is taken by British forces.
August 22 » James Cook's ship HMSResolution returns to England (Cook having been killed on Hawaii during the voyage).
September 21 » American Revolutionary War: Benedict Arnold gives the British the plans to West Point.
November 9 » American Revolutionary War: In the Battle of Fishdam Ford a force of British and Loyalist troops fail in a surprise attack against the South Carolina Patriot militia under Brigadier General Thomas Sumter.
December 14 » Founding Father Alexander Hamilton marries Elizabeth Schuyler Hamilton at the Schuyler Mansion in Albany, New York
When copying data from this family tree, please include a reference to the origin: Hans Pruckmuller, "Family tree Van Willigen", database, Genealogy Online (https://www.genealogieonline.nl/van-willigen-stamboom/I18987.php : accessed March 13, 2026), "Willemijntje van Os (1778-1780)".
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