January 31 » Czechoslav Trade Union Association is founded in Prague.
April 18 » The Greco-Turkish War is declared between Greece and the Ottoman Empire.
June 16 » A treaty annexing the Republic of Hawaii to the United States is signed; the Republic would not be dissolved until a year later.
July 2 » British-Italian engineer Guglielmo Marconi obtains a patent for radio in London.
August 10 » German chemist Felix Hoffmann discovers an improved way of synthesizing acetylsalicylic acid (aspirin).
September 11 » After months of pursuit, generals of Menelik II of Ethiopia capture Gaki Sherocho, the last king of Kaffa, bringing an end to that ancient kingdom.
Day of marriage June 7, 1921
The temperature on June 7, 1921 was between 9.5 °C and 23.1 °C and averaged 17.0 °C. There was 14.6 hours of sunshine (88%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. 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.
March 1 » The Australian cricket team captained by Warwick Armstrong becomes the first team to complete a whitewash of The Ashes, something that would not be repeated for 86 years.
March 24 » The 1921 Women's Olympiad begins in Monte Carlo, first international women's sports event.
May 8 » The creation of the Communist Party of Romania.
July 11 » The Red Army captures Mongolia from the White Army and establishes the Mongolian People's Republic.
October 8 » KDKA in Pittsburgh's Forbes Field conducts the first live broadcast of a football game.
October 26 » The Chicago Theatre opens.
Day of death May 26, 1967
The temperature on May 26, 1967 was between 7.6 °C and 15.9 °C and averaged 11.7 °C. There was 4.4 mm of rain during 2.4 hours. There was 7.3 hours of sunshine (45%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west-southwest. Source: KNMI
When copying data from this family tree, please include a reference to the origin: Jerry van Kampen, "Family tree van Kampen-Willems", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-kampen/I474.php : accessed January 12, 2026), "Geertruida Johanna Frederiks (1897-1967)".
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