February 17 » In Sweden February 17 is followed by March 1 as the country moves from the Julian calendar to the Gregorian calendar.
May 1 » Publication of Species Plantarum by Linnaeus, and the formal start date of plant taxonomy adopted by the International Code of Botanical Nomenclature.
Day of marriage January 6, 1780
The temperature on January 6, 1780 was about 3.0 °C. There was 4 mm of rainWind direction mainly west-northwest. Weather type: betrokken regen. Source: KNMI
April 16 » Franz Friedrich Wilhelm von Fürstenberg founds the University of Münster.
May 19 » New England's Dark Day, an unusual darkening of the day sky, was observed over the New England states and parts of Canada.
May 29 » American Revolutionary War: At the Battle of Waxhaws, the British continue attacking after the Continentals lay down their arms, killing 113 and critically wounding all but 53 that remained.
September 21 » American Revolutionary War: Benedict Arnold gives the British the plans to West Point.
October 2 » American Revolutionary War: John André, a British Army officer, is hanged as a spy by the Continental Army.
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.
When copying data from this family tree, please include a reference to the origin: Chris Hughes, "Hughes tree", database, Genealogy Online (https://www.genealogieonline.nl/hughes-tree/P281.php : accessed February 23, 2026), "Betty Williamson (1753-1829)".
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