January 25 » The British Parliament passes the Constitutional Act of 1791 and splits the old Province of Quebec into Upper Canada and Lower Canada.
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.
June 21 » King Louis XVI of France and his immediate family begin the Flight to Varennes during the French Revolution.
August 21 » A Vodou ceremony, led by Dutty Boukman, turns into a violent slave rebellion, beginning the Haitian Revolution.
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.
Day of marriage May 9, 1813
The temperature on May 9, 1813 was about 18.0 °C. Wind direction mainly north. Weather type: half bewolkt regen zwaar donder weerlicht. Special wheather fenomena: bliksem. Source: KNMI
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De Republiek der Verenigde Nederlanden werd in 1794-1795 door de Fransen veroverd onder leiding van bevelhebber Charles Pichegru (geholpen door de Nederlander Herman Willem Daendels); de verovering werd vergemakkelijkt door het dichtvriezen van de Waterlinie; Willem V moest op 18 januari 1795 uitwijken naar Engeland (en van daaruit in 1801 naar Duitsland); de patriotten namen de macht over van de aristocratische regenten en proclameerden de Bataafsche Republiek; op 16 mei 1795 werd het Haags Verdrag gesloten, waarmee ons land een vazalstaat werd van Frankrijk; in 3.1796 kwam er een Nationale Vergadering; in 1798 pleegde Daendels een staatsgreep, die de unitarissen aan de macht bracht; er kwam een nieuwe grondwet, die een Vertegenwoordigend Lichaam (met een Eerste en Tweede Kamer) instelde en als regering een Directoire; in 1799 sloeg Daendels bij Castricum een Brits-Russische invasie af; in 1801 kwam er een nieuwe grondwet; bij de Vrede van Amiens (1802) kreeg ons land van Engeland zijn koloniën terug (behalve Ceylon); na de grondwetswijziging van 1805 kwam er een raadpensionaris als eenhoofdig gezag, namelijk Rutger Jan Schimmelpenninck (van 31 oktober 1761 tot 25 maart 1825).
February 7 » In the action of 7 February 1813 near the Îles de Los, the frigates Aréthuse and Amelia batter each other, but neither can gain the upper hand.
February 20 » Manuel Belgrano defeats the royalist army of Pío de Tristán during the Battle of Salta.
May 20 » Napoleon Bonaparte leads his French troops into the Battle of Bautzen in Saxony, Germany, against the combined armies of Russia and Prussia. The battle ends the next day with a French victory.
May 24 » South American independence leader Simón Bolívar enters Mérida, leading the invasion of Venezuela, and is proclaimed El Libertador ("The Liberator").
July 5 » War of 1812: Three weeks of British raids on Fort Schlosser, Black Rock and Plattsburgh, New York commence.
October 19 » War of the Sixth Coalition: Napoleon is forced to retreat from Germany after the Battle of Leipzig.
Day of death July 25, 1866
The temperature on July 25, 1866 was about 18.3 °C. The air pressure was 7 kgf/m2 and came mainly from the northwest. The airpressure was 76 cm mercury. The atmospheric humidity was 59%. Source: KNMI
In The Netherlands , there was from February 1, 1862 to February 10, 1866 the cabinet Thorbecke II, with Mr. J.R. Thorbecke (liberaal) as prime minister.
In The Netherlands , there was from February 10, 1866 to June 1, 1866 the cabinet Fransen van de Putte, with I.D. Fransen van de Putte (liberaal) as prime minister.
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).
February 16 » Spencer Compton Cavendish, Marquess of Hartington becomes British Secretary of State for War.
March 27 » President of the United States of America Andrew Johnson vetoes the Civil Rights Act of 1866. His veto is overridden by Congress and the bill passes into law on April 9.
July 24 » Reconstruction: Tennessee becomes the first U.S. state to be readmitted to the Union following the American Civil War.
July 25 » The United States Congress passes legislation authorizing the rank of General of the Army. Lieutenant General Ulysses S. Grant becomes the first to be promoted to this rank.
July 27 » The first permanent transatlantic telegraph cable is successfully completed, stretching from Valentia Island, Ireland, to Heart's Content, Newfoundland.
August 23 » Austro-Prussian War ends with the Treaty of Prague.
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/I192983.php : accessed October 17, 2026), "Johannes Piers de Groot (1791-1866)".
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