February 7 » Dreyfus affair: Émile Zola is brought to trial for libel for publishing J'Accuse…!.
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.
August 25 » Seven hundred Greek civilians, 17 British guards and the British Consul of Crete are killed by a Turkish mob in Heraklion, Greece.
September 10 » Empress Elisabeth of Austria is assassinated by Luigi Lucheni.
October 6 » Phi Mu Alpha Sinfonia, the largest American music fraternity, is founded at the New England Conservatory of Music.
Day of death May 31, 1921
The temperature on May 31, 1921 was between 11.0 °C and 21.5 °C and averaged 16.0 °C. There was 0.2 mm of rain. There was 3.1 hours of sunshine (19%). The average windspeed was 3 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.
January 16 » The Marxist Left in Slovakia and the Transcarpathian Ukraine holds its founding congress in Ľubochňa.
February 21 » Constituent Assembly of the Democratic Republic of Georgia adopts the country's first constitution.
February 21 » Rezā Shāh takes control of Tehran during a successful coup.
May 3 » West Virginia becomes the first state to legislate a broad sales tax, but does not implement it until a number of years later due to enforcement issues.
August 28 » The Red Army dissolved the Free Territory, after driving the Black Army out of Ukraine.
October 29 » United States: Second trial of Sacco and Vanzetti in Boston, Massachusetts.
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/I134648.php : accessed January 1, 2026), "François Anthonij Witteveen (1898-1921)".
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