January 10 » The Siege of Dunlap's Station begins near Cincinnati during the Northwest Indian War.
March 2 » Long-distance communication speeds up with the unveiling of a semaphore machine in Paris.
August 21 » A Vodou ceremony, led by Dutty Boukman, turns into a violent slave rebellion, beginning the Haitian Revolution.
August 30 » HMSPandora sinks after having run aground on the outer Great Barrier Reef the previous day.
September 5 » Olympe de Gouges writes the Declaration of the Rights of Woman and of the Female Citizen.
October 1 » First session of the French Legislative Assembly.
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 December 31, 2025), "Cornelisje (Cornelisje ) van Duijn (1791-1867)".
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