February 4 » The Philippine–American War begins with the Battle of Manila.
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.
May 30 » Pearl Hart, a female outlaw of the Old West, robs a stage coach 30 miles southeast of Globe, Arizona.
July 26 » Ulises Heureaux, the 27th President of the Dominican Republic, is assassinated.
Day of marriage June 15, 1921
The temperature on June 15, 1921 was between 5.0 °C and 19.1 °C and averaged 13.6 °C. There was 1.7 hours of sunshine (10%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north-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.
February 12 » Bolsheviks launch a revolt in Georgia as a preliminary to the Red Army invasion of Georgia.
February 22 » After Russian forces under Baron Roman von Ungern-Sternberg drive the Chinese out, the Bogd Khan is reinstalled as the emperor of Mongolia.
July 11 » The Red Army captures Mongolia from the White Army and establishes the Mongolian People's Republic.
July 22 » Rif War: The Spanish Army suffers its worst military defeat in modern times to the Berbers of the Rif region of Spanish Morocco.
July 29 » Adolf Hitler becomes leader of the National Socialist German Workers Party.
November 4 » The Saalschutz Abteilung (hall defense detachment) of the Nazi Party is renamed the Sturmabteilung (storm detachment) after a large riot in Munich.
Day of death May 7, 1980
The temperature on May 7, 1980 was between 7.3 °C and 13.2 °C and averaged 10.2 °C. There was -0.1 mm of rain. There was 1.7 hours of sunshine (11%). The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
February 2 » Reports surface that the FBI is targeting allegedly corrupt Congressmen in the Abscam operation.
March 21 » U.S. President Jimmy Carter announces a United States boycott of the 1980 Summer Olympics in Moscow to protest the Soviet–Afghan War.
July 7 » Institution of sharia law in Iran.
August 1 » A train crash kills 18 people in County Cork, Ireland.
September 26 » At the Oktoberfest terror attack in Munich 13 people die and 211 are injured.
November 20 » Lake Peigneur drains into an underlying salt deposit. A misplaced Texaco oil probe had been drilled into the Diamond Crystal Salt Mine, causing water to flow down into the mine, eroding the edges of the hole.
When copying data from this family tree, please include a reference to the origin: Eva Drenth, "Family tree Diverse", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-drenth/I11975.php : accessed February 16, 2026), "Johanna Petronella de Groot (1899-1980)".
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