January 9 » Connecticut becomes the fifth state to ratify the Constitution.
January 26 » The British First Fleet, led by Arthur Phillip, sails into Port Jackson (Sydney Harbour) to establish Sydney, the first permanent European settlement on Australia. Commemorated as Australia Day.
May 23 » South Carolina ratifies the United States Constitution as the eighth American state.
July 25 » Wolfgang Amadeus Mozart completes his Symphony No. 40 in G minor (K550).
July 26 » New York ratifies the United States Constitution and becomes the 11th state of the United States.
December 22 » Nguyễn Huệ proclaims himself Emperor Quang Trung, in effect abolishing on his own the Lê dynasty.
Day of death January 1, 1791
The temperature on January 1, 1791 was about 1.0 °C. Wind direction mainly south east. Weather type: betrokken mist. Source: KNMI
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.
July 17 » Members of the French National Guard under the command of General Lafayette open fire on a crowd of radical Jacobins at the Champ de Mars, Paris, during the French Revolution, killing scores of people.
August 4 » The Treaty of Sistova is signed, ending the Ottoman–Habsburg wars.
August 21 » A Vodou ceremony, led by Dutty Boukman, turns into a violent slave rebellion, beginning the Haitian Revolution.
August 26 » John Fitch is granted a United States patent for the steamboat.
Day of burial January 6, 1791
The temperature on January 6, 1791 was about 3.0 °C. Wind direction mainly south. Weather type: zeer betrokken. Source: KNMI
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.
September 9 » Washington, D.C., the capital of the United States, is named after President George Washington.
September 14 » The Papal States lose Avignon to Revolutionary France.
September 27 » The National Assembly votes to award full citizenship to Jews in France.
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.
When copying data from this family tree, please include a reference to the origin: Kitty Morris, "de Bas and Branches", database, Genealogy Online (https://www.genealogieonline.nl/de-bas-and-branches/I1817.php : accessed February 13, 2026), "Pieter Poli (1788-1791)".
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