May 21 » A lava dome collapses on Mount Unzen, near the city of Shimbara on the Japanese island of Kyūshū, creating a deadly tsunami that kills nearly 15,000 people.
June 4 » Captain George Vancouver claims Puget Sound for the Kingdom of Great Britain.
September 2 » During what became known as the September Massacres of the French Revolution, rampaging mobs slaughter three Roman Catholic bishops, more than two hundred priests, and prisoners believed to be royalist sympathizers.
September 11 » The Hope Diamond is stolen along with other French crown jewels when six men break into the house where they are stored.
October 29 » Mount Hood (Oregon) is named after Samuel Hood, 1st Viscount Hood by Lt. William E. Broughton who sighted the mountain near the mouth of the Willamette River.
December 11 » French Revolution: King Louis XVI of France is put on trial for treason by the National Convention.
Day of marriage September 12, 1809
The temperature on September 12, 1809 was about 15.0 °C. There was 48 mm of rainWind direction mainly northwest. Weather type: betrokken regen. 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).
March 27 » Peninsular War: A combined Franco-Polish force defeats the Spanish in the Battle of Ciudad Real.
April 22 » The second day of the Battle of Eckmühl: The Austrian army is defeated by the First French Empire army led by Napoleon and driven over the Danube in Regensburg.
July 6 » The second day of the Battle of Wagram; France defeats the Austrian army in the largest battle to date of the Napoleonic Wars.
July 16 » The city of La Paz, in what is today Bolivia, declares its independence from the Spanish Crown during the La Paz revolution and forms the Junta Tuitiva, the first independent government in Spanish America, led by Pedro Domingo Murillo.
September 17 » Peace between Sweden and Russia in the Finnish War; the territory that will become Finland is ceded to Russia by the Treaty of Fredrikshamn.
October 15 » The Viceroy the Río de la Plata, Baltasar Hidalgo de Cisneros, opens the port of Buenos Aires to trade with nations other than Spain.
Day of death May 25, 1881
The temperature on May 25, 1881 was about 17.6 °C. The air pressure was 3 kgf/m2 and came mainly from the east-southeast. The airpressure was 76 cm mercury. The atmospheric humidity was 67%. Source: KNMI
In The Netherlands , there was from August 20, 1879 to April 23, 1883 the cabinet Van Lijnden van Sandenburg, with Mr. C.Th. baron Van Lijnden van Sandenburg (conservatief-AR) as prime minister.
When copying data from this family tree, please include a reference to the origin: Charles Olson, "Olson's Tree", database, Genealogy Online (https://www.genealogieonline.nl/olsons-tree/P8057.php : accessed January 4, 2026), "Helen Schermerhorn (1792-1881)".
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