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 10 » League of Nations Covenant enters into force. On January 16 the organization holds its first council meeting, in Paris.
January 16 » Zeta Phi Beta Sorority Incorporated was founded on the campus of Howard University.
July 11 » In the East Prussian plebiscite the local populace decides to remain with Weimar Germany.
July 15 » The Polish Parliament establishes Silesian Voivodeship before the Polish-German plebiscite.
August 11 » The Latvian–Soviet Peace Treaty, which relinquished Russia's authority and pretenses to Latvia, is signed, ending the Latvian War of Independence.
September 7 » Two newly purchased Savoia flying boats crash in the Swiss Alps en route to Finland where they would serve with the Finnish Air Force, killing both crews.
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The Family tree Van Willigen publication was prepared by Rob van Willigen (contact is not possible).
When copying data from this family tree, please include a reference to the origin: Rob van Willigen, "Family tree Van Willigen", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-willigen/I9506.php : accessed January 14, 2026), "Johanna Oudshoorn (1893-????)".
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