January 23 » The Malolos Constitution is inaugurated, establishing the First Philippine Republic. Emilio Aguinaldo is sworn in as its first President.
February 22 » Filipino forces led by General Antonio Luna launch counterattacks for the first time against the American forces during the Philippine–American War. The Filipinos fail to regain Manila from the Americans.
March 27 » Emilio Aguinaldo leads Filipino forces for the only time during the Philippine–American War at the Battle of Marilao River.
June 12 » New Richmond tornado: The eighth deadliest tornado in U.S. history kills 117 people and injures around 200.
October 11 » The Second Boer War erupts in South Africa between the British-ruled Cape Colony, and the Boer-ruled Transvaal and Orange Free State.
December 11 » Second Boer War: In the Battle of Magersfontein the Boers commanded by general Piet Cronjé inflict a defeat on the forces of the British Empire commanded by Lord Methuen trying to relieve the Siege of Kimberley.
Day of marriage December 17, 1921
The temperature on December 17, 1921 was between 6.3 °C and 10.5 °C and averaged 8.2 °C. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west. 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 25 » Georgian capital Tbilisi falls to the invading Russian forces after heavy fighting and the Russians declare the Georgian Soviet Socialist Republic.
March 18 » The second Peace of Riga is signed between Poland and the Soviet Union.
May 8 » The creation of the Communist Party of Romania.
June 30 » U.S. President Warren G. Harding appoints former President William Howard Taft as Chief Justice of the United States.
September 5 » Roscoe "Fatty" Arbuckle party in San Francisco ends with the death of the young actress Virginia Rappe: One of the first scandals of the Hollywood community.
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: Gert Jonker, "Family tree Jonker", database, Genealogy Online (https://www.genealogieonline.nl/jonker_stamboom/I4819.php : accessed February 11, 2026), "Johannes Arentsen (1899-????)".
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