March 22 » Before the Société pour L'Encouragement à l'Industrie, brothers Auguste and Louis Lumière demonstrate movie film technology publicly for the first time.
April 3 » The trial in the libel case brought by Oscar Wilde begins, eventually resulting in his imprisonment on charges of homosexuality.
May 25 » The Republic of Formosa is formed, with Tang Jingsong as its president.
September 18 » The Atlanta Exposition Speech on race relations is delivered by Booker T. Washington.
October 21 » The Republic of Formosa collapses as Japanese forces invade.
December 28 » Wilhelm Röntgen publishes a paper detailing his discovery of a new type of radiation, which later will be known as x-rays.
Day of marriage December 29, 1920
The temperature on December 29, 1920 was between 7.2 °C and 12.2 °C and averaged 9.3 °C. There was 5.5 mm of rain. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. 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.
July 11 » In the East Prussian plebiscite the local populace decides to remain with Weimar Germany.
August 16 » Polish–Soviet War: The Battle of Radzymin concludes; the Soviet Red Army is forced to turn away from Warsaw.
August 16 » Ray Chapman of the Cleveland Indians is hit on the head by a fastball thrown by Carl Mays of the New York Yankees, and dies early the next day. Chapman was the second player to die from injuries sustained in a Major League Baseball game, the first being Doc Powers in 1909.
September 16 » The Wall Street bombing: A bomb in a horse wagon explodes in front of the J. P. Morgan building in New York City killing 38 and injuring 400.
December 16 » The Haiyuan earthquake of 8.5Mw , rocks the Gansu province in China, killing an estimated 200,000.
December 22 » The GOELRO economic development plan is adopted by the 8th Congress of Soviets of the Russian SFSR.
When copying data from this family tree, please include a reference to the origin: J Eijsermans, "Eijsermans family tree", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-eijsermans/I187222.php : accessed February 18, 2026), "Pieternella Catharina de Ceuster (1895-????)".
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