January 12 » The National Trust is founded in the United Kingdom.
January 13 » First Italo-Ethiopian War: the war's opening battle, the Battle of Coatit, occurs; it is an Italian victory.
May 25 » Playwright, poet and novelist Oscar Wilde is convicted of "committing acts of gross indecency with other male persons" and sentenced to serve two years in prison.
August 31 » German Count Ferdinand von Zeppelin patents his navigable balloon.
November 8 » While experimenting with electricity, Wilhelm Röntgen discovers the X-ray.
December 28 » Wilhelm Röntgen publishes a paper detailing his discovery of a new type of radiation, which later will be known as x-rays.
Day of marriage April 28, 1920
The temperature on April 28, 1920 was between 2.8 °C and 11.1 °C and averaged 6.8 °C. There was 4.1 mm of rain. There was 8.8 hours of sunshine (60%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west. 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 10 » The Treaty of Versailles takes effect, officially ending World War I.
February 2 » The Tartu Peace Treaty is signed between Estonia and Russia.
April 15 » Two security guards are murdered during a robbery in South Braintree, Massachusetts. Anarchists Sacco and Vanzetti would be convicted of and executed for the crime, amid much controversy.
May 7 » Morecambe Football Club was founded during a meeting at the West View Hotel on the town's promenade.
July 15 » The Polish Parliament establishes Silesian Voivodeship before the Polish-German plebiscite.
September 17 » The National Football League is organized as the American Professional Football Association in Canton, Ohio.
Day of death April 23, 1970
The temperature on April 23, 1970 was between 9.0 °C and 12.6 °C and averaged 10.8 °C. There was 1.4 mm of rain during 2.4 hours. There was -0.1 hours of sunshine (0%). The almost completely overcast was. The average windspeed was 5 Bft (very strong wind) and was prevailing from the southwest. Source: KNMI
January 15 » Nigerian Civil War: Biafran rebels surrender following an unsuccessful 32-month fight for independence from Nigeria.
April 24 » China launches Dong Fang Hong I, becoming the fifth nation to put an object into orbit using its own booster.
May 14 » Andreas Baader is freed from custody by Ulrike Meinhof, Gudrun Ensslin and others, a pivotal moment in the formation of the Red Army Faction.
June 11 » After being appointed on May 15, Anna Mae Hays and Elizabeth P. Hoisington officially receive their ranks as U.S. Army Generals, becoming the first women to do so.
November 13 » Bhola cyclone: A 150-mph tropical cyclone hits the densely populated Ganges Delta region of East Pakistan (now Bangladesh), killing an estimated 500,000 people in one night.
November 17 » Luna programme: The Soviet Union lands Lunokhod 1 on Mare Imbrium (Sea of Rains) on the Moon. This is the first roving remote-controlled robot to land on another world and is released by the orbiting Luna 17 spacecraft.
When copying data from this family tree, please include a reference to the origin: Hans Pruckmuller, "Family tree Van Willigen", database, Genealogy Online (https://www.genealogieonline.nl/van-willigen-stamboom/I16941.php : accessed January 26, 2026), "Bernardus Grevenstuk (1895-1970)".
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