February 15 » The battleship USSMaine explodes and sinks in Havana harbor in Cuba, killing 274. This event leads the United States to declare war on Spain.
February 27 » King George I of Greece survives an assassination attempt.
May 8 » The first games of the Italian football league system are played.
June 10 » Spanish–American War: In the Battle of Guantánamo Bay, U.S. Marines begin the American invasion of Spanish-held Cuba.
September 13 » Hannibal Goodwin patents celluloid photographic film.
October 6 » Phi Mu Alpha Sinfonia, the largest American music fraternity, is founded at the New England Conservatory of Music.
Day of marriage May 9, 1923
The temperature on May 9, 1923 was between 6.2 °C and 13.6 °C and averaged 9.1 °C. There was 5.1 mm of rain. There was 1.9 hours of sunshine (12%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northwest. 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.
January 1 » Britain's Railways are grouped into the Big Four: LNER, GWR, SR, and LMS.
April 18 » Yankee Stadium: "The House that Ruth Built" opens.
April 26 » The Duke of York weds Lady Elizabeth Bowes-Lyon at Westminster Abbey.
June 9 » Bulgaria's military takes over the government in a coup.
September 26 » The German government accepts the occupation of the Ruhr.
November 9 » In Munich, Germany, police and government troops crush the Beer Hall Putsch in Bavaria. The failed coup is the work of the Nazis.
Day of death August 12, 1967
The temperature on August 12, 1967 was between 13.1 °C and 18.8 °C and averaged 15.3 °C. There was 0.5 mm of rain during 0.7 hours. There was 4.5 hours of sunshine (30%). The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the southwest. Source: KNMI
March 7 » The Majelis Permusyawaratan Rakyat Sementara (MPRS), Indonesia's provisional parliament, revoked Sukarno's mandate as President of Indonesia.
April 28 » Vietnam War: Boxer Muhammad Ali refuses his induction into the United States Army and is subsequently stripped of his championship and license.
April 29 » After refusing induction into the United States Army the previous day, Muhammad Ali is stripped of his boxing title.
July 6 » Nigerian Civil War: Nigerian forces invade Biafra, beginning the war.
July 23 » Detroit Riots: In Detroit, one of the worst riots in United States history begins on 12th Street in the predominantly African American inner city. It ultimately kills 43 people, injures 342 and burns about 1,400 buildings.
November 14 » American physicist Theodore Maiman is given a patent for his ruby laser systems, the world's first laser.
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/I14977.php : accessed January 28, 2026), "Trijntje Groothof (1898-1967)".
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