January 28 » Sir Horace Walpole coins the word serendipity in a letter to a friend.
May 28 » French and Indian War: In the first engagement of the war, Virginia militia under the 22-year-old Lieutenant colonel George Washington defeat a French reconnaissance party in the Battle of Jumonville Glen in what is now Fayette County in southwestern Pennsylvania.
July 3 » French and Indian War: George Washington surrenders Fort Necessity to French forces.
Day of marriage June 25, 1780
The temperature on June 25, 1780 was about 15.0 °C. Wind direction mainly west-northwest. Weather type: zeer betrokken. Source: KNMI
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.
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 5 » French-American forces under Colonel LaBalme are defeated by Miami Chief Little Turtle.
Day of death June 22, 1789
The temperature on June 22, 1789 was about 15.0 °C. There was 110 mm of rainWind direction mainly southwest. Weather type: zeer betrokken. Source: KNMI
January 23 » Georgetown College, the first Catholic university in the United States, is founded in Georgetown, Maryland (now a part of Washington, D.C.).
April 21 » George Washington's reception at Trenton is hosted by the Ladies of Trenton as he journeys to New York City for his first inauguration.
July 14 » French Revolution: Citizens of Paris storm the Bastille.
September 11 » Alexander Hamilton is appointed the first United States Secretary of the Treasury.
September 29 » The United States Department of War first establishes a regular army with a strength of several hundred men.
October 3 » George Washington proclaims a Thanksgiving Day for that year.
When copying data from this family tree, please include a reference to the origin: Harry Westerman, "Family tree Westerman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-westerman/I254.php : accessed February 12, 2026), "Harm Berents Zaskers (-1789)".
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