January 12 » The National Trust is founded in the United Kingdom.
February 1 » Fountains Valley, Pretoria, the oldest nature reserve in Africa, is proclaimed by President Paul Kruger.
April 3 » The trial in the libel case brought by Oscar Wilde begins, eventually resulting in his imprisonment on charges of homosexuality.
May 7 » In Saint Petersburg, Russian scientist Alexander Stepanovich Popov demonstrates to the Russian Physical and Chemical Society his invention, the Popov lightning detector—a primitive radio receiver. In some parts of the former Soviet Union the anniversary of this day is celebrated as Radio Day.
October 4 » Horace Rawlins wins the first U.S. Open Men's Golf Championship.
October 21 » The Republic of Formosa collapses as Japanese forces invade.
Day of marriage July 21, 1915
The temperature on July 21, 1915 was between 11.6 °C and 18.4 °C and averaged 15.2 °C. There was 0.3 mm of rain. There was 9.6 hours of sunshine (60%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
January 22 » Over 600 people are killed in Guadalajara, Mexico, when a train plunges off the tracks into a deep canyon.
January 26 » The Rocky Mountain National Park is established by an act of the U.S. Congress.
January 28 » An act of the U.S. Congress creates the United States Coast Guard as a branch of the United States Armed Forces.
January 31 » World War I: Germany is the first to make large-scale use of poison gas in warfare in the Battle of Bolimów against Russia.
June 21 » The U.S. Supreme Court hands down its decision in Guinn v. United States 238 US 347 1915, striking down Oklahoma grandfather clause legislation which had the effect of denying the right to vote to blacks.
July 1 » Leutnant Kurt Wintgens of the then-named German Deutsches Heer's Fliegertruppe army air service achieves the first known aerial victory with a synchronized machine-gun armed fighter plane, the Fokker M.5K/MG Eindecker.
Day of death September 17, 1943
The temperature on September 17, 1943 was between 9.0 °C and 21.9 °C and averaged 15.1 °C. There was 2.0 mm of rain during 2.0 hours. There was 3.7 hours of sunshine (29%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south. Source: KNMI
In The Netherlands , there was from July 27, 1941 to February 23, 1945 the cabinet Gerbrandy II, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
February 3 » The SSDorchester is sunk by a German U-boat. Only 230 of 902 men aboard survive.
February 16 » World War II: In the early phases of the Third Battle of Kharkov, Red Army troops re-enter the city.
March 27 » World War II: Battle of the Komandorski Islands: In the Aleutian Islands the battle begins when United States Navy forces intercept Japanese attempting to reinforce a garrison at Kiska.
May 17 » World War II: Dambuster Raids commence by No. 617 Squadron RAF.
July 5 » World War II: An Allied invasion fleet sails for Sicily (Operation Husky, July 10, 1943).
August 27 » World War II: Japanese forces evacuate New Georgia Island in the Pacific Theater of Operations during World War II.
When copying data from this family tree, please include a reference to the origin: Frank Coster, "Family tree Coster", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_coster/I6468.php : accessed January 7, 2026), "Lea Groenewoudt (1895-1943)".
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