April 18 » The Greco-Turkish War is declared between Greece and the Ottoman Empire.
April 30 » J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
May 26 » The original manuscript of William Bradford's history, "Of Plymouth Plantation" is returned to the Governor of Massachusetts by the Bishop of London after being taken during the American Revolutionary War.
July 26 » Anglo-Afghan War: The Pashtun fakir Saidullah leads an army of more than 10,000 to begin a siege of the British garrison in the Malakand Agency of the North West Frontier Province of India.
August 10 » German chemist Felix Hoffmann discovers an improved way of synthesizing acetylsalicylic acid (aspirin).
September 12 » Tirah Campaign: In the Battle of Saragarhi, ten thousand Pashtun tribesmen suffer several hundred casualties while attacking 21 Sikh soldiers in British service.
Day of marriage April 21, 1921
The temperature on April 21, 1921 was between 2.2 °C and 11.1 °C and averaged 6.7 °C. There was 0.6 mm of rain. There was 2.5 hours of sunshine (18%). The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. 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 9 » Greco-Turkish War: The First Battle of İnönü, the first battle of the war, begins near Eskişehir in Anatolia.
February 22 » After Russian forces under Baron Roman von Ungern-Sternberg drive the Chinese out, the Bogd Khan is reinstalled as the emperor of Mongolia.
February 27 » The International Working Union of Socialist Parties is founded in Vienna.
June 15 » Bessie Coleman earns her pilot's license, becoming the first female pilot of African-American descent.
August 3 » Major League Baseball Commissioner Kenesaw Mountain Landis confirms the ban of the eight Chicago Black Sox, the day after they were acquitted by a Chicago court.
October 29 » The Link River Dam, a part of the Klamath Reclamation Project, is completed.
Day of death January 8, 1938
The temperature on January 8, 1938 was between 3.2 °C and 5.4 °C and averaged 3.9 °C. There was 1.0 hours of sunshine (13%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
February 11 » BBC Television produces the world's first ever science fiction television programme, an adaptation of a section of the Karel Čapek play R.U.R., that coined the term "robot".
July 3 » United States President Franklin D. Roosevelt dedicates the Eternal Light Peace Memorial and lights the eternal flame at Gettysburg Battlefield.
July 20 » The United States Department of Justice files suit in New York City against the motion picture industry charging violations of the Sherman Antitrust Act in regards to the studio system. The case would eventually result in a break-up of the industry in 1948.
August 20 » Lou Gehrig hits his 23rd career grand slam, a record that stood for 75 years until it was broken by Alex Rodriguez.
October 1 » Germany annexes the Sudetenland.
November 14 » The Lions Gate Bridge, connecting Vancouver to the North Shore region, opens to traffic.
When copying data from this family tree, please include a reference to the origin: Maria Vos-Blekemolen, "Family tree Groot, Schellinkhout", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-groot-schellinkhout/I4045.php : accessed January 24, 2026), "Willemijntje Komen (1897-1938)".
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