January 25 » The British Parliament passes the Constitutional Act of 1791 and splits the old Province of Quebec into Upper Canada and Lower Canada.
February 18 » Congress passes a law admitting the state of Vermont to the Union, effective 4 March, after that state had existed for 14 years as a de facto independent largely unrecognized state.
March 2 » Long-distance communication speeds up with the unveiling of a semaphore machine in Paris.
July 14 » The Priestley Riots drive Joseph Priestley, a supporter of the French Revolution, out of Birmingham, England.
August 26 » John Fitch is granted a United States patent for the steamboat.
November 9 » Foundation of the Dublin Society of United Irishmen.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I178053.php : accessed December 30, 2025), "Mendelt Tjeerts Kollenborg (± 1765-????)".
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