April 15 » Closing ceremony of the Games of the I Olympiad in Athens, Greece.
June 15 » The deadliest tsunami in Japan's history kills more than 22,000 people.
August 30 » Philippine Revolution: After Spanish victory in the Battle of San Juan del Monte, eight provinces in the Philippines are declared under martial law by the Spanish Governor-General Ramón Blanco y Erenas.
Day of marriage June 23, 1920
The temperature on June 23, 1920 was between 9.2 °C and 20.6 °C and averaged 14.7 °C. There was 4.2 hours of sunshine (25%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-northwest. 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 10 » The Treaty of Versailles takes effect, officially ending World War I.
January 13 » The Reichstag Bloodbath of January 13, 1920, the bloodiest demonstration in German history.
January 28 » Foundation of the Spanish Legion.
May 7 » Treaty of Moscow: Soviet Russia recognizes the independence of the Democratic Republic of Georgia only to invade the country six months later.
November 21 » Irish War of Independence: In Dublin, 31 people are killed in what became known as "Bloody Sunday".
December 22 » The GOELRO economic development plan is adopted by the 8th Congress of Soviets of the Russian SFSR.
Day of death April 22, 1964
The temperature on April 22, 1964 was between 6.3 °C and 14.7 °C and averaged 9.8 °C. There was 0.1 mm of rain during 0.1 hours. There was 7.0 hours of sunshine (49%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
April 13 » At the Academy Awards, Sidney Poitier becomes the first African-American male to win the Best Actor award for the 1963 film Lilies of the Field.
June 12 » Anti-apartheid activist and ANC leader Nelson Mandela is sentenced to life in prison for sabotage in South Africa.
October 27 » Ronald Reagan delivers a speech on behalf of the Republican candidate for president, Barry Goldwater. The speech launches his political career and comes to be known as "A Time for Choosing".
October 29 » The United Republic of Tanganyika and Zanzibar is renamed the United Republic of Tanzania.
December 1 » Vietnam War: U.S. President Lyndon B. Johnson and his top-ranking advisers meet to discuss plans to bomb North Vietnam.
December 5 » Lloyd J. Old discovered the first linkage between the major histocompatibility complex (MHC) and disease—mouse leukemia—opening the way for the recognition of the importance of the MHC in the immune response.
When copying data from this family tree, please include a reference to the origin: Jaap Geensen, "Geensen database", database, Genealogy Online (https://www.genealogieonline.nl/geensen-database/I1893.php : accessed October 25, 2026), "Marinus Geerard Geense (1896-1964)".
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