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.
May 26 » The original manuscript of William Bradford's history, "Of Plymouth Plantation" is returned to the Governor of Massachusetts by the Bishop of London after being taken during the American Revolutionary War.
August 21 » Oldsmobile, an American automobile manufacturer and marque, is founded.
September 1 » The Tremont Street Subway in Boston opens, becoming the first underground rapid transit system in North America.
December 6 » London becomes the world's first city to host licensed taxicabs.
December 9 » Activist Marguerite Durand founds the feminist daily newspaper La Fronde in Paris.
Day of marriage December 18, 1919
The temperature on December 18, 1919 was between 0.6 °C and 6.8 °C and averaged 4.3 °C. There was 3.9 mm of rain. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. 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.
April 13 » Jallianwala Bagh massacre: British Indian Army troops lead by Brigadier-General Reginald Dyer killed approx 379-1000 unarmed demonstrators including men and women in Amritsar, India; and approximately 1,500 injured.
April 16 » Mohandas Gandhi organizes a day of "prayer and fasting" in response to the killing of Indian protesters in the Jallianwala Bagh massacre by the British colonial troops three days earlier.
May 15 » Greek occupation of Smyrna. During the occupation, the Greek army kills or wounds 350 Turks; those responsible are punished by Greek commander Aristides Stergiades.
June 2 » Anarchists simultaneously set off bombs in eight separate U.S. cities.
July 13 » The British airship R34 lands in Norfolk, England, completing the first airship return journey across the Atlantic in 182 hours of flight.
Day of death October 20, 1944
The temperature on October 20, 1944 was between 5.4 °C and 11.2 °C and averaged 9.0 °C. There was 7.3 mm of rain during 5.1 hours. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
In The Netherlands , there was from July 27, 1941 to February 23, 1945 the cabinet Gerbrandy II, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
When copying data from this family tree, please include a reference to the origin: J. van Broekhoven, "Database Van Broekhoven", database, Genealogy Online (https://www.genealogieonline.nl/database-van-broekhoven/I64480.php : accessed February 16, 2026), "Marinus Hendricus de Jong (1897-1944)".
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