April 18 » The Greco-Turkish War is declared between Greece and the Ottoman Empire.
April 30 » J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
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 21 » Oldsmobile, an American automobile manufacturer and marque, is founded.
September 10 » Lattimer massacre: A sheriff's posse kills 19 unarmed striking immigrant miners in Lattimer, Pennsylvania, United States.
Day of marriage May 20, 1920
The temperature on May 20, 1920 was between 6.4 °C and 15.9 °C and averaged 11.2 °C. There was 6.8 mm of rain. There was 0.1 hours of sunshine (1%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north. 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 23 » The Netherlands refuses to surrender the exiled Kaiser Wilhelm II of Germany to the Allies.
January 28 » Foundation of the Spanish Legion.
July 12 » The Soviet–Lithuanian Peace Treaty is signed, by which Soviet Russia recognizes the independence of Lithuania.
August 25 » Polish–Soviet War: Battle of Warsaw, which began on August 13, ends with the Red Army's defeat.
October 25 » After 74 days on hunger strike in Brixton Prison, England, the Sinn Féin Lord Mayor of Cork, Terence MacSwiney dies.
November 12 » Italy and the Kingdom of Serbs, Croats and Slovenes sign the Treaty of Rapallo.
Day of death March 14, 1979
The temperature on March 14, 1979 was between 1.5 °C and 5.0 °C and averaged 3.1 °C. There was 3.9 mm of rain during 11.0 hours. The almost completely overcast was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northeast. 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.
May 4 » Margaret Thatcher becomes the first female Prime Minister of the United Kingdom.
September 14 » Afghan President Nur Muhammad Taraki is assassinated upon the order of Hafizullah Amin, who becomes the new president.
October 14 » The first National March on Washington for Lesbian and Gay Rights draws approximately 100,000 people.
November 4 » Iran hostage crisis: A group of Iranian college students overruns the U.S. embassy in Tehran and takes 90 hostages.
November 15 » A package from Unabomber Ted Kaczynski begins smoking in the cargo hold of a flight from Chicago to Washington, D.C., forcing the plane to make an emergency landing.
December 9 » The eradication of the smallpox virus is certified, making smallpox the first of only two diseases that have been driven to extinction (rinderpest in 2011 being the other).
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I189289.php : accessed December 28, 2025), "Johanna van der Wielen (1897-1979)".
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