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).
March 4 » Vermont is admitted to the United States as the fourteenth state.
May 15 » French Revolution: Maximilien Robespierre proposes the Self-denying Ordinance.
August 26 » John Fitch is granted a United States patent for the steamboat.
August 30 » HMSPandora sinks after having run aground on the outer Great Barrier Reef the previous day.
September 30 » France's National Constituent Assembly is dissolved, to be replaced the next day by the National Legislative Assembly
Christening day March 27, 1791
The temperature on March 27, 1791 was about 8.0 °C. Wind direction mainly east by north. Weather type: omtrent helder. Source: KNMI
January 2 » Big Bottom massacre in the Ohio Country, North America, marking the beginning of the Northwest Indian War.
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.
August 4 » The Treaty of Sistova is signed, ending the Ottoman–Habsburg wars.
September 5 » Olympe de Gouges writes the Declaration of the Rights of Woman and of the Female Citizen.
December 15 » The United States Bill of Rights becomes law when ratified by the Virginia General Assembly.
Day of death March 21, 1869
The temperature on March 21, 1869 was about 10.5 °C. The air pressure was 13 kgf/m2 and came mainly from the east-northeast. The airpressure was 75 cm mercury. The atmospheric humidity was 37%. Source: KNMI
From June 4, 1868 till January 4, 1871 the Netherlands had a cabinet Van Bosse - Fock with the prime ministers Mr. P.P. van Bosse (liberaal) and Mr. C. Fock (liberaal).
June 27 » The Republic of Ezo on the island of Hokkaido ends after being defeated by Japanese Imperial troops.
August 2 » Japan's Edo society class system is abolished as part of the Meiji Restoration reforms.
August 16 » Battle of Acosta Ñu: A Paraguayan battalion made up of children is massacred by the Brazilian Army during the Paraguayan War.
August 29 » The Mount Washington Cog Railway opens, making it the world's first mountain-climbing rack railway.
November 6 » In New Brunswick, New Jersey, Rutgers College defeats Princeton University (then known as the College of New Jersey), 6–4, in the first official intercollegiate American football game.
November 17 » In Egypt, the Suez Canal, linking the Mediterranean Sea with the Red Sea, is inaugurated.
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/I141970.php : accessed February 15, 2026), "Trijntje Jans Zijlstra (1791-1869)".
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