March 14 » American Revolutionary War: Spanish forces capture Fort Charlotte in Mobile, Alabama, the last British frontier post capable of threatening New Orleans.
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".
September 21 » American Revolutionary War: Benedict Arnold gives the British the plans to West Point.
September 23 » American Revolution: British Major John André is arrested as a spy by American soldiers exposing Benedict Arnold's change of sides.
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
Christening day December 31, 1780
The temperature on December 31, 1780 was about 6.0 °C. Wind direction mainly west-southwest. Weather type: betrokken mist. 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".
August 22 » James Cook's ship HMSResolution returns to England (Cook having been killed on Hawaii during the voyage).
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 5 » French-American forces under Colonel LaBalme are defeated by Miami Chief Little Turtle.
December 14 » Founding Father Alexander Hamilton marries Elizabeth Schuyler Hamilton at the Schuyler Mansion in Albany, New York
Day of death January 4, 1783
The temperature on January 4, 1783 was about -1.0 °C. Wind direction mainly south by east. Weather type: zeer betrokken. Source: KNMI
February 7 » American Revolutionary War: French and Spanish forces lift the Great Siege of Gibraltar.
March 15 » In an emotional speech in Newburgh, New York, George Washington asks his officers not to support the Newburgh Conspiracy. The plea is successful and the threatened coup d'état never takes place.
September 3 » American Revolutionary War: The war ends with the signing of the Treaty of Paris by the United States and the Kingdom of Great Britain.
October 15 » The Montgolfier brothers' hot air balloon makes the first human ascent, piloted by Jean-François Pilâtre de Rozier.
November 3 » The American Continental Army is disbanded.
November 21 » In Paris, Jean-François Pilâtre de Rozier and François Laurent d'Arlandes, make the first untethered hot air balloon flight.
When copying data from this family tree, please include a reference to the origin: Jaap van der Werff, "Family tree Van der Werff / Kooistra", database, Genealogy Online (https://www.genealogieonline.nl/van-der-werff-stamboom/I528005.php : accessed February 18, 2026), "Jacoba Johannes Rosier (1780-1783)".
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