May 25 » The Republic of Formosa is formed, with Tang Jingsong as its president.
September 3 » John Brallier becomes the first openly professional American football player, when he was paid US$10 by David Berry, to play for the Latrobe Athletic Association in a 12-0 win over the Jeanette Athletic Association.
November 5 » George B. Selden is granted the first U.S. patent for an automobile.
November 8 » While experimenting with electricity, Wilhelm Röntgen discovers the X-ray.
November 27 » At the Swedish–Norwegian Club in Paris, Alfred Nobel signs his last will and testament, setting aside his estate to establish the Nobel Prize after he dies.
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 May 23, 1919
The temperature on May 23, 1919 was between 7.4 °C and 26.3 °C and averaged 17.7 °C. There was 13.8 hours of sunshine (86%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-northeast. 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.
June 4 » Women's rights: The U.S. Congress approves the 19th Amendment to the United States Constitution, which guarantees suffrage to women, and sends it to the U.S. states for ratification.
June 14 » John Alcock and Arthur Whitten Brown depart from St. John's, Newfoundland on the first nonstop transatlantic flight.
August 11 » Germany's Weimar Constitution is signed into law.
September 11 » United States Marine Corps invades Honduras.
September 22 » The steel strike of 1919, led by the Amalgamated Association of Iron and Steel Workers, begins in Pennsylvania before spreading across the United States.
December 1 » Lady Astor becomes the first female Member of Parliament to take her seat in the House of Commons of the United Kingdom. (She had been elected to that position on November 28.)
When copying data from this family tree, please include a reference to the origin: Tijs van den Brink, "Parentele of Geurt Jacobs", database, Genealogy Online (https://www.genealogieonline.nl/geurt-jacobs/I92963.php : accessed February 2, 2026), "Petronella Davelaar (1895-????)".
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