February 23 » Émile Zola is imprisoned in France after writing J'Accuse…!, a letter accusing the French government of antisemitism and wrongfully imprisoning Captain Alfred Dreyfus.
June 22 » Spanish–American War: In a chaotic operation, 6,000 men of the U.S. Fifth Army Corps begins landing at Daiquirí, Cuba, about 16 miles (26km) east of Santiago de Cuba. Lt. Gen. Arsenio Linares y Pombo of the Spanish Army outnumbers them two-to-one, but does not oppose the landings.
June 27 » The first solo circumnavigation of the globe is completed by Joshua Slocum from Briar Island, Nova Scotia.
August 24 » Count Muravyov, Foreign Minister of Russia presents a rescript that convoked the First Hague Peace Conference.
September 10 » Empress Elisabeth of Austria is assassinated by Luigi Lucheni.
December 10 » Spanish–American War: The Treaty of Paris is signed, officially ending the conflict.
Day of marriage February 12, 1920
The temperature on February 12, 1920 was between 1.4 °C and 8.5 °C and averaged 4.6 °C. There was 6.4 hours of sunshine (66%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 10 » League of Nations Covenant enters into force. On January 16 the organization holds its first council meeting, in Paris.
February 9 » Under the terms of the Svalbard Treaty, international diplomacy recognizes Norwegian sovereignty over Arctic archipelago Svalbard, and designates it as demilitarized.
March 12 » The Kapp Putsch begins when the Marinebrigade Ehrhardt is ordered to march on Berlin.
April 28 » Azerbaijan is added to the Soviet Union.
August 16 » Polish–Soviet War: The Battle of Radzymin concludes; the Soviet Red Army is forced to turn away from Warsaw.
November 28 » Irish War of Independence: Kilmichael Ambush: The Irish Republican Army ambush a convoy of British Auxiliaries and kill seventeen.
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/I80318.php : accessed October 25, 2026), "Tjeerd Oldenburger (1898-????)".
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