April 3 » The trial in the libel case brought by Oscar Wilde begins, eventually resulting in his imprisonment on charges of homosexuality.
April 17 » The Treaty of Shimonoseki between China and Japan is signed. This marks the end of the First Sino-Japanese War, and the defeated Qing Empire is forced to renounce its claims on Korea and to concede the southern portion of the Fengtien province, Taiwan and the Pescadores Islands to Japan.
May 25 » The Republic of Formosa is formed, with Tang Jingsong as its president.
October 8 » Korean Empress Myeongseong is assassinated by Japanese infiltrators.
October 21 » The Republic of Formosa collapses as Japanese forces invade.
November 8 » While experimenting with electricity, Wilhelm Röntgen discovers the X-ray.
Day of marriage April 21, 1917
The temperature on April 21, 1917 was between 3.4 °C and 9.8 °C and averaged 5.8 °C. There was 3.5 hours of sunshine (25%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the north-northwest. 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.
July 12 » The Bisbee Deportation occurs as vigilantes kidnap and deport nearly 1,300 striking miners and others from Bisbee, Arizona.
August 30 » Vietnamese prison guards led by Trịnh Văn Cấn mutiny at the Thái Nguyên penitentiary against local French authority.
September 14 » The Russian Empire is formally replaced by the Russian Republic.
November 5 » October Revolution: Lenin calls for the October Revolution.
December 2 » World War I: Russia and the Central Powers sign an armistice at Brest-Litovsk, and peace talks leading to the Treaty of Brest-Litovsk begin.
When copying data from this family tree, please include a reference to the origin: Enno Borgsteede, "Borgsteede family tree", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-borgsteede/I9103.php : accessed February 14, 2026), "Lady Mary Alice Gasgoyne-Cecil (1895-1988)".
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