February 15 » The battleship USSMaine explodes and sinks in Havana harbor in Cuba, killing 274. This event leads the United States to declare war on Spain.
February 27 » King George I of Greece survives an assassination attempt.
August 11 » Spanish–American War: American troops enter the city of Mayagüez, Puerto Rico.
September 2 » Battle of Omdurman: British and Egyptian troops defeat Sudanese tribesmen and establish British dominance in Sudan.
September 10 » Empress Elisabeth of Austria is assassinated by Luigi Lucheni.
September 13 » Hannibal Goodwin patents celluloid photographic film.
Day of marriage July 19, 1917
The temperature on July 19, 1917 was between 13.4 °C and 18.5 °C and averaged 17.1 °C. There was 0.2 mm of rain. There was 0.1 hours of sunshine (1%). The average windspeed was 4 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.
February 5 » The Congress of the United States passes the Immigration Act of 1917 over President Woodrow Wilson's veto.
February 5 » The current constitution of Mexico is adopted, establishing a federal republic with powers separated into independent executive, legislative, and judicial branches.
February 24 » World War I: The U.S. ambassador Walter Hines Page to the United Kingdom is given the Zimmermann Telegram, in which Germany pledges to ensure the return of New Mexico, Texas, and Arizona to Mexico if Mexico declares war on the United States.
June 11 » King Alexander assumes the throne of Greece after his father, Constantine I, abdicates under pressure from allied armies occupying Athens.
October 12 » World War I: The First Battle of Passchendaele takes place resulting in the largest single-day loss of life in New Zealand history.
November 28 » The Estonian Provincial Assembly declares itself the sovereign power of Estonia.
Day of death May 26, 1952
The temperature on May 26, 1952 was between 10.3 °C and 15.4 °C and averaged 12.0 °C. There was 1.0 mm of rain during 2.3 hours. There was 3.2 hours of sunshine (20%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
May 7 » The concept of the integrated circuit, the basis for all modern computers, is first published by Geoffrey Dummer.
June 13 » Catalina affair: A Swedish Douglas DC-3 is shot down by a Soviet MiG-15 fighter.
June 21 » The Philippine School of Commerce, through a republic act, is converted to Philippine College of Commerce, later to be the Polytechnic University of the Philippines.
October 14 » Korean War: The Battle of Triangle Hill is the biggest and bloodiest battle of 1952.
October 20 » The Governor of Kenya declares a state of emergency and begins arresting hundreds of suspected leaders of the Mau Mau Uprising.
December 24 » First flight of Britain's Handley Page Victor strategic bomber.
When copying data from this family tree, please include a reference to the origin: Alfred Groot, "Family tree Groot", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-groot/I211.php : accessed December 28, 2025), "Willemina Kommer (1898-1952)".
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