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 26 » Anglo-Afghan War: The Pashtun fakir Saidullah leads an army of more than 10,000 to begin a siege of the British garrison in the Malakand Agency of the North West Frontier Province of India.
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 30 » The British Colony of Natal annexes Zululand.
Day of marriage May 28, 1919
The temperature on May 28, 1919 was between 3.1 °C and 18.3 °C and averaged 12.1 °C. There was 9.4 hours of sunshine (58%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northeast. 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.
February 21 » German socialist Kurt Eisner is assassinated. His death results in the establishment of the Bavarian Soviet Republic and parliament and government fleeing Munich, Germany.
June 2 » Anarchists simultaneously set off bombs in eight separate U.S. cities.
June 14 » John Alcock and Arthur Whitten Brown depart from St. John's, Newfoundland on the first nonstop transatlantic flight.
June 21 » Admiral Ludwig von Reuter scuttles the German fleet at Scapa Flow, Orkney. The nine sailors killed are the last casualties of World War I.
September 4 » Mustafa Kemal Atatürk, who founded the Republic of Turkey, gathers a congress in Sivas to make decisions as to the future of Anatolia and Thrace.
December 3 » After nearly 20 years of planning and construction, including two collapses causing 89 deaths, the Quebec Bridge opens to traffic.
Day of death January 7, 1921
The temperature on January 7, 1921 was between 6.1 °C and 8.2 °C and averaged 7.0 °C. There was 1.7 mm of rain. There was -0.1 hours of sunshine (0%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-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.
February 15 » Kingdom of Romania establishes its legation in Helsinki.
March 8 » Spanish Prime Minister Eduardo Dato Iradier is assassinated while exiting the parliament building in Madrid.
May 3 » West Virginia becomes the first state to legislate a broad sales tax, but does not implement it until a number of years later due to enforcement issues.
July 2 » World War I: U.S. President Warren G. Harding signs the Knox–Porter Resolution formally ending the war between the United States and Germany.
September 7 » The Legion of Mary, the largest apostolic organization of lay people in the Catholic Church, is founded in Dublin, Ireland.
December 22 » Opening of Visva-Bharati College, also known as Santiniketan College, now Visva Bharati University, India.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I75915.php : accessed October 15, 2026), "Anke Jacoba Holmersma (1897-1921)".
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