January 13 » First Italo-Ethiopian War: the war's opening battle, the Battle of Coatit, occurs; it is an Italian victory.
March 15 » Heian Shrine is founded.
April 24 » Joshua Slocum, the first person to sail single-handedly around the world, sets sail from Boston, Massachusetts aboard the sloop "Spray".
May 25 » Playwright, poet and novelist Oscar Wilde is convicted of "committing acts of gross indecency with other male persons" and sentenced to serve two years in prison.
June 11 » Paris–Bordeaux–Paris, sometimes called the first automobile race in history or the "first motor race", takes place.
June 28 » The United States Court of Private Land Claims rules James Reavis’s claim to Barony of Arizona is "wholly fictitious and fraudulent."
Day of marriage June 15, 1921
The temperature on June 15, 1921 was between 5.0 °C and 19.1 °C and averaged 13.6 °C. There was 1.7 hours of sunshine (10%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northwest. 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 15 » Bessie Coleman earns her pilot's license, becoming the first female pilot of African-American descent.
July 22 » Rif War: The Spanish Army suffers its worst military defeat in modern times to the Berbers of the Rif region of Spanish Morocco.
July 23 » The Communist Party of China (CPC) is established at the founding National Congress.
August 14 » Tannu Uriankhai, later Tuvan People's Republic is established as a completely independent country (which is supported by Soviet Russia).
August 28 » The Red Army dissolved the Free Territory, after driving the Black Army out of Ukraine.
September 5 » Roscoe "Fatty" Arbuckle party in San Francisco ends with the death of the young actress Virginia Rappe: One of the first scandals of the Hollywood community.
Day of burial March 29, 1971
The temperature on March 29, 1971 was between -2.1 °C and 11.4 °C and averaged 4.9 °C. There was 10.8 hours of sunshine (85%). The average windspeed was 2 Bft (weak wind) and was prevailing from the east-southeast. Source: KNMI
February 2 » The international Ramsar Convention for the conservation and sustainable utilization of wetlands is signed in Ramsar, Mazandaran, Iran.
February 20 » The United States Emergency Broadcast System is accidentally activated in an erroneous national alert.
February 27 » Doctors in the first Dutch abortion clinic (the Mildredhuis in Arnhem) start performing artificially-induced abortions.
September 11 » The Egyptian Constitution becomes official.
September 15 » The first Greenpeace ship sets sail to protest against nuclear testing on Amchitka Island.
November 22 » In Britain's worst mountaineering tragedy, the Cairngorm Plateau Disaster, five children and one of their leaders are found dead from exposure in the Scottish mountains.
When copying data from this family tree, please include a reference to the origin: Tijs van den Brink, "Parentele of Jan Thonis", database, Genealogy Online (https://www.genealogieonline.nl/jan-thonis/I120527.php : accessed January 28, 2026), "Hendrik van de Klok (1895-????)".
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