January 17 » The United States takes possession of Wake Island in the Pacific Ocean.
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 6 » Bayer registers "Aspirin" as a trademark.
March 31 » Malolos, capital of the First Philippine Republic, is captured by American forces.
July 11 » Fiat founded by Giovanni Agnelli in Turin, Italy.
Day of marriage May 21, 1924
The temperature on May 21, 1924 was between 12.7 °C and 24.3 °C and averaged 18.8 °C. There was 0.4 mm of rain. There was 11.7 hours of sunshine (73%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southeast. 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.
February 14 » The Computing-Tabulating-Recording Company changes its name to International Business Machines Corporation (IBM).
March 3 » The 407-year-old Islamic caliphate is abolished, when Caliph Abdülmecid II of the Ottoman Caliphate is deposed. The last remnant of the old regime gives way to the reformed Turkey of Kemal Atatürk.
May 21 » University of Chicago students Richard Loeb and Nathan Leopold, Jr. murder 14-year-old Bobby Franks in a "thrill killing".
June 2 » U.S. President Calvin Coolidge signs the Indian Citizenship Act into law, granting citizenship to all Native Americans born within the territorial limits of the United States.
June 26 » The American occupation of the Dominican Republic ends after eight years.
August 4 » Diplomatic relations between Mexico and the Soviet Union are established.
Day of death May 26, 1969
The temperature on May 26, 1969 was between 7.6 °C and 16.2 °C and averaged 12.9 °C. There was 4.0 hours of sunshine (25%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
March 19 » The 385-metre-tall (1,263ft) TV-mast at Emley Moor transmitting station, United Kingdom, collapses due to ice build-up.
July 19 » Chappaquiddick incident: U.S. Senator Ted Kennedy crashes his car into a tidal pond at Chappaquiddick Island, Massachusetts, killing his passenger Mary Jo Kopechne.
July 25 » Vietnam War: U.S. President Richard Nixon declares the Nixon Doctrine, stating that the United States now expects its Asian allies to take care of their own military defense. This is the start of the "Vietnamization" of the war.
August 10 » A day after murdering Sharon Tate and four others, members of Charles Manson's cult kill Leno and Rosemary LaBianca.
August 11 » The Apollo 11 astronauts are released from a three-week quarantine following their liftoff from the moon.
October 21 » The 1969 Somali coup d'état establishes a Marxist–Leninist administration.
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/I208927.php : accessed February 13, 2026), "Pieter Wiersma (1899-1969)".
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