March 4 » American Revolutionary War: The Continental Army fortifies Dorchester Heights with cannon, leading the British troops to abandon the Siege of Boston.
May 1 » Establishment of the Illuminati in Ingolstadt, Upper Bavaria, by Jesuit-taught Adam Weishaupt.
July 12 » Captain James Cook begins his third voyage.
August 27 » Battle of Long Island: In what is now Brooklyn, New York, British forces under General William Howe defeat Americans under General George Washington.
November 20 » American Revolutionary War: British forces land at the Palisades and then attack Fort Lee. The Continental Army starts to retreat across New Jersey.
December 25 » George Washington and the Continental Army cross the Delaware River at night to attack Hessian forces serving Great Britain at Trenton, New Jersey, the next day.
When copying data from this family tree, please include a reference to the origin: Yolande Harps, "Family tree Harps (Harp)", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-harps/I325.php : accessed January 28, 2026), "Johannes Joost Harps (1776-????)".
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