June 16 » Roald Amundsen leaves Oslo, Norway, to commence the first east–west navigation of the Northwest Passage.
August 2 » The Ilinden–Preobrazhenie Uprising against the Ottoman Empire begins.
September 11 » The first race at the Milwaukee Mile in West Allis, Wisconsin is held. It is the oldest major speedway in the world.
October 10 » The Women's Social and Political Union is founded in support of the enfranchisement of British women.
November 3 » With the encouragement of the United States, Panama separates from Colombia.
December 17 » The Wright brothers make the first controlled powered, heavier-than-air flight in the Wright Flyer at Kitty Hawk, North Carolina.
Day of marriage April 1, 1931
The temperature on April 1, 1931 was between -4.6 °C and 8.5 °C and averaged 2.3 °C. There was 10.5 hours of sunshine (81%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east-southeast. Source: KNMI
In The Netherlands , there was from August 10, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
March 3 » The United States adopts The Star-Spangled Banner as its national anthem.
March 11 » Ready for Labour and Defence of the USSR, abbreviated as GTO, is introduced in the Soviet Union.
March 31 » A Transcontinental & Western Air airliner crashes near Bazaar, Kansas, killing eight, including University of Notre Dame head football coach Knute Rockne.
May 7 » The stand-off between criminal Francis Crowley and 300 members of the New York Police Department takes place in his fifth-floor apartment on West 91st Street, New York City.
July 1 » Wiley Post and Harold Gatty become the first people to circumnavigate the globe in a single-engined monoplane aircraft.
December 5 » Cathedral of Christ the Saviour in Moscow was destroyed on orders from Joseph Stalin.
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/I136517.php : accessed February 15, 2026), "Gezina Jacoba de Boer (1903-)".
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