January 13 » Émile Zola's J'accuse…! exposes the Dreyfus affair.
February 23 » Émile Zola is imprisoned in France after writing J'Accuse…!, a letter accusing the French government of antisemitism and wrongfully imprisoning Captain Alfred Dreyfus.
June 12 » Philippine Declaration of Independence: General Emilio Aguinaldo declares the Philippines' independence from Spain.
August 12 » The Hawaiian flag is lowered from ʻIolani Palace in an elaborate annexation ceremony and replaced with the flag of the United States to signify the transfer of sovereignty from the Republic of Hawaii to the United States.
August 13 » Carl Gustav Witt discovers 433 Eros, the first near-Earth asteroid to be found.
November 5 » Negrese nationalists revolt against Spanish rule and establish the short-lived Republic of Negros.
Day of marriage September 10, 1921
The temperature on September 10, 1921 was between 10.3 °C and 20.3 °C and averaged 16.4 °C. There was 5.0 mm of rain. There was 0.7 hours of sunshine (5%). 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 20 » The first Constitution of Turkey is adopted, making fundamental changes in the source and exercise of sovereignty by consecrating the principle of national sovereignty.
March 8 » Spanish Prime Minister Eduardo Dato Iradier is assassinated while exiting the parliament building in Madrid.
June 12 » Mikhail Tukhachevsky orders the use of chemical weapons against the Tambov Rebellion, bringing an end to the peasant uprising.
August 14 » Tannu Uriankhai, later Tuvan People's Republic is established as a completely independent country (which is supported by Soviet Russia).
October 13 » Soviet republics sign the Treaty of Kars to formalize the borders between Turkey and the South Caucasus states.
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/I16284.php : accessed February 16, 2026), "Antje Algera (1898-????)".
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