March 1 » Henri Becquerel discovers radioactive decay.
March 2 » The Battle of Adwa: The Italian Army defeated by the Ethiopian Army in Adwa, Tigray, Ethiopia.
May 18 » The United States Supreme Court rules in Plessy v. Ferguson that the "separate but equal" doctrine is constitutional.
November 1 » A picture showing the bare breasts of a woman appears in National Geographic magazine for the first time.
December 10 » Alfred Jarry's Ubu Roi premieres in Paris. A riot breaks out at the end of the performance.
December 14 » The Glasgow Underground Railway is opened by the Glasgow District Subway Company.
Day of marriage August 23, 1916
The temperature on August 23, 1916 was between 5.7 °C and 18.4 °C and averaged 14.0 °C. There was 4.8 hours of sunshine (34%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southwest. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
March 8 » World War I: A British force unsuccessfully attempts to relieve the siege of Kut (present-day Iraq) in the Battle of Dujaila.
April 24 » Ernest Shackleton and five men of the Imperial Trans-Antarctic Expedition launch a lifeboat from uninhabited Elephant Island in the Southern Ocean to organise a rescue for the crew of the sunken Endurance.
August 27 » World War I: The Kingdom of Romania declares war on Austria-Hungary, entering the war as one of the Allied nations.
August 30 » Ernest Shackleton completes the rescue of all of his men stranded on Elephant Island in Antarctica.
October 7 » Georgia Tech defeats Cumberland University 222–0 in the most lopsided college football game in American history.
November 21 » Mines from SM U-73 sink the HMHS Britannic, the largest ship lost in the First World War.
When copying data from this family tree, please include a reference to the origin: Marieke Cooper, "Family tree Cooper, Kooper, Oostwal, Robert, Ooteman en Blokland", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-cooper/I2223.php : accessed March 10, 2026), "Johannes Adrianus Kooper (1896-????)".
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