January 13 » Émile Zola's J'accuse…! exposes the Dreyfus affair.
February 27 » King George I of Greece survives an assassination attempt.
June 13 » Yukon Territory is formed, with Dawson chosen as its capital.
July 3 » A Spanish squadron, led by Pascual Cervera y Topete, is defeated by an American squadron under William T. Sampson in the Battle of Santiago de Cuba.
August 11 » Spanish–American War: American troops enter the city of Mayagüez, Puerto Rico.
December 3 » The Duquesne Country and Athletic Club defeated an all-star collection of early football players 16–0, in what is considered to be the very first all-star game for professional American football.
Day of marriage December 22, 1921
The temperature on December 22, 1921 was between 6.2 °C and 9.7 °C and averaged 7.8 °C. There was 1.2 mm of rain. There was -0.1 hours of sunshine (0%). The average windspeed was 5 Bft (very strong wind) 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 British K-class submarine HMS K5 sinks in the English Channel; all 56 on board die.
February 27 » The International Working Union of Socialist Parties is founded in Vienna.
March 17 » The Second Polish Republic adopts the March Constitution.
September 7 » The Legion of Mary, the largest apostolic organization of lay people in the Catholic Church, is founded in Dublin, Ireland.
October 29 » The Harvard University football team loses to Centre College, ending a 25-game winning streak. This is considered one of the biggest upsets in college football.
October 29 » United States: Second trial of Sacco and Vanzetti in Boston, Massachusetts.
Day of death September 20, 1971
The temperature on September 20, 1971 was between 4.4 °C and 22.6 °C and averaged 13.2 °C. There was 0.1 mm of rain. There was 7.4 hours of sunshine (60%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the north-northeast. Source: KNMI
February 2 » Idi Amin replaces President Milton Obote as leader of Uganda.
September 8 » In Washington, D.C., the John F. Kennedy Center for the Performing Arts is inaugurated, with the opening feature being the premiere of Leonard Bernstein's Mass.
November 18 » Oman declares its independence from United Kingdom.
November 22 » In Britain's worst mountaineering tragedy, the Cairngorm Plateau Disaster, five children and one of their leaders are found dead from exposure in the Scottish mountains.
November 24 » During a severe thunderstorm over Washington state, a hijacker calling himself Dan Cooper (aka D. B. Cooper) parachutes from a Northwest Orient Airlines plane with $200,000 in ransom money. He has never been found.
December 20 » The international aid organization Doctors Without Borders is founded by Bernard Kouchner and a group of journalists in Paris, France.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I14461.php : accessed February 21, 2026), "Roelof Schonewille (1898-1971)".
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