January 24 » Second Boer War: Boers stop a British attempt to break the Siege of Ladysmith in the Battle of Spion Kop.
February 27 » Fußball-Club Bayern München is founded.
June 14 » The second German Naval Law calls for the Imperial German Navy to be doubled in size, resulting in an Anglo-German naval arms race.
August 3 » The Firestone Tire and Rubber Company is founded.
August 16 » The Battle of Elands River during the Second Boer War ends after a 13-day siege is lifted by the British. The battle had begun when a force of between 2,000 and 3,000 Boers had surrounded a force of 500 Australians, Rhodesians, Canadians and British soldiers at a supply dump at Brakfontein Drift.
October 19 » Max Planck discovers Planck's law of black-body radiation.
Day of marriage May 6, 1921
The temperature on May 6, 1921 was between -1.9 °C and 15.6 °C and averaged 9.4 °C. There was 3.2 hours of sunshine (21%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south. 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.
February 12 » Bolsheviks launch a revolt in Georgia as a preliminary to the Red Army invasion of Georgia.
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.
March 15 » Talaat Pasha, former Grand Vizir of the Ottoman Empire and chief architect of the Armenian Genocide is assassinated in Berlin by a 23-year-old Armenian, Soghomon Tehlirian.
March 18 » The Kronstadt rebellion is suppressed by the Red Army.
June 15 » Bessie Coleman earns her pilot's license, becoming the first female pilot of African-American descent.
October 19 » The Portuguese Prime Minister and several officials are murdered in the Bloody Night coup.
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/I113447.php : accessed February 13, 2026), "Wibbina Boonstra (1900-)".
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