March 1 » The first United States census is authorized.
May 31 » The United States enacts its first copyright statute, the Copyright Act of 1790.
July 31 » The first U.S. patent is issued, to inventor Samuel Hopkins for a potash process.
December 17 » The Aztec calendar stone is discovered at El Zócalo, Mexico City.
December 22 » The Turkish fortress of Izmail is stormed and captured by Alexander Suvorov and his Russian armies.
December 31 » Efimeris, the oldest Greek newspaper of which issues have survived till today, is published for the first time.
Day of marriage June 23, 1818
The temperature on June 23, 1818 was about 16.0 °C. Wind direction mainly west-southwest. Weather type: half bewolkt winderig. 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).
January 2 » The British Institution of Civil Engineers is founded by a group of six engineers; Thomas Telford would later become its first president.
January 15 » A paper by David Brewster is read to the Royal Society, belatedly announcing his discovery of what we now call the biaxial class of doubly-refracting crystals. On the same day, Augustin-Jean Fresnel signs a "supplement" (submitted four days later) on reflection of polarized light.
February 5 » Jean-Baptiste Bernadotte ascends to the thrones of Sweden and Norway.
February 12 » Bernardo O'Higgins formally approves the Chilean Declaration of Independence near Concepción, Chile.
April 4 » The United States Congress, affirming the Second Continental Congress, adopts the flag of the United States with 13 red and white stripes and one star for each state (20 at that time).
October 20 » The Convention of 1818 is signed between the United States and the United Kingdom, which settles the Canada–United States border on the 49th parallel for most of its length.
Day of death December 16, 1863
The temperature on December 16, 1863 was about 6.4 °C. There was 0.2 mm of rain. The air pressure was 16 kgf/m2 and came mainly from the southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 94%. 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.
February 17 » A group of citizens of Geneva founded an International Committee for Relief to the Wounded, which later became known as the International Committee of the Red Cross.
May 18 » American Civil War: The Siege of Vicksburg begins.
June 7 » During the French intervention in Mexico, Mexico City is captured by French troops.
June 9 » American Civil War: Battle of Brandy Station, Virginia.
July 19 » American Civil War: Morgan's Raid: At Buffington Island in Ohio, Confederate General John Hunt Morgan's raid into the north is mostly thwarted when a large group of his men are captured while trying to escape across the Ohio River.
September 19 » American Civil War: The first day of the Battle of Chickamauga, in northwestern Georgia, the bloodiest two-day battle of the conflict, and the only significant Confederate victory in the war's Western Theater.
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/I9375.php : accessed December 26, 2025), "Gepke Sjoerds Heidema (1790-1863)".
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