January 31 » Datu Muhammad Salleh is killed in Kampung Teboh, Tambunan, ending the Mat Salleh Rebellion.
March 18 » AFC Ajax Amsterdam, The Netherlands's biggest and most successful football club, was founded.
June 5 » Second Boer War: British soldiers take Pretoria.
July 9 » The Federation of Australia is given royal assent.
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 July 11, 1923
The temperature on July 11, 1923 was between 19.0 °C and 33.1 °C and averaged 25.8 °C. There was 13.0 hours of sunshine (79%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south east. Source: KNMI
In The Netherlands , there was from September 19, 1922 to August 4, 1925 the cabinet Ruys de Beerenbrouck II, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
April 28 » Wembley Stadium is opened, named initially as the Empire Stadium.
June 27 » Capt. Lowell H. Smith and Lt. John P. Richter perform the first ever aerial refueling in a DH.4B biplane.
August 16 » The United Kingdom gives the name "Ross Dependency" to part of its claimed Antarctic territory and makes the Governor-General of the Dominion of New Zealand its administrator.
September 4 » Maiden flight of the first U.S. airship, the USSShenandoah.
October 15 » The German Rentenmark is introduced in Germany to counter hyperinflation in the Weimar Republic.
November 11 » Adolf Hitler was arrested in Munich for high treason for his role in the Beer Hall Putsch.
When copying data from this family tree, please include a reference to the origin: J. van Broekhoven, "Database Van Broekhoven", database, Genealogy Online (https://www.genealogieonline.nl/database-van-broekhoven/I294852.php : accessed February 18, 2026), "Antoon Gabriel Wierstra (1900-)".
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