January 31 » Czechoslav Trade Union Association is founded in Prague.
February 28 » Queen Ranavalona III, the last monarch of Madagascar, is deposed by a French military force.
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.
July 11 » Salomon August Andrée leaves Spitsbergen to attempt to reach the North Pole by balloon. He later crashes and dies.
September 12 » Tirah Campaign: In the Battle of Saragarhi, ten thousand Pashtun tribesmen suffer several hundred casualties while attacking 21 Sikh soldiers in British service.
December 30 » The British Colony of Natal annexes Zululand.
Day of death March 20, 1957
The temperature on March 20, 1957 was between 7.6 °C and 15.2 °C and averaged 10.7 °C. There was 2.5 mm of rain during 1.4 hours. There was 3.6 hours of sunshine (30%). The partly clouded was. The average windspeed was 5 Bft (very strong wind) and was prevailing from the south-southwest. Source: KNMI
When copying data from this family tree, please include a reference to the origin: Ronald de Vries, "Family tree Steven de Vries & Geertruida Beers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-steven-de-vries/I3848.php : accessed June 23, 2024), "Johan Friedrich Deneken (1897-1957)".
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