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 4 » The Constitutional Act of 1791 is introduced by the British House of Commons in London which envisages the separation of Canada into Lower Canada (Quebec) and Upper Canada (Ontario).
June 21 » King Louis XVI of France and his immediate family begin the Flight to Varennes during the French Revolution.
August 22 » Beginning of the Haitian Slave Revolution in Saint-Domingue, Haiti.
November 4 » Northwest Indian War: The Western Confederacy of American Indians wins a major victory over the United States in the Battle of the Wabash.
December 4 » The first edition of The Observer, the world's first Sunday newspaper, is published.
Day of death September 20, 1867
The temperature on September 20, 1867 was about 16.3 °C. The air pressure was 1 kgf/m2 and came mainly from the north-northwest. The airpressure was 76 cm mercury. The atmospheric humidity was 68%. Source: KNMI
From June 1, 1866 till June 4, 1868 the Netherlands had a cabinet Van Zuijlen van Nijevelt - Heemskerk with the prime ministers Mr. J.P.J.A. graaf Van Zuijlen van Nijevelt (AR) and Mr. J. Heemskerk Azn. (conservatief).
When copying data from this family tree, please include a reference to the origin: Nico Willemse, "Gijsendopher family tree compiled by N.W.Willemse", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-gijsendopher/I129.php : accessed February 15, 2026), "Cornelisje (Cornelisje ) van Duijn (1791-1867)".
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