March 4 » Vermont is admitted to the United States as the fourteenth state.
May 3 » The Constitution of May 3 (the first modern constitution in Europe) is proclaimed by the Sejm of Polish–Lithuanian Commonwealth.
September 14 » The Papal States lose Avignon to Revolutionary France.
September 30 » The first performance of Mozart's opera The Magic Flute takes place two months before his death.
October 1 » First session of the French Legislative Assembly.
November 9 » Foundation of the Dublin Society of United Irishmen.
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).
January 15 » Forty people die when ice covering the boating lake at Regent's Park, London, collapses.
March 2 » The U.S. Congress passes the first Reconstruction Act.
August 28 » The United States takes possession of the (at this point unoccupied) Midway Atoll.
October 18 » United States takes possession of Alaska after purchasing it from Russia for $7.2million. Celebrated annually in the state as Alaska Day.
November 3 » Giuseppe Garibaldi and his followers are defeated in the Battle of Mentana and fail to end the Pope's Temporal power in Rome (it would be achieved three years later).
December 4 » Former Minnesota farmer Oliver Hudson Kelley founds the Order of the Patrons of Husbandry (better known today as the Grange).
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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