January 22 » The United Mine Workers of America is founded in Columbus, Ohio.
April 14 » The Pan-American Union is founded by the First International Conference of American States in Washington, D.C.
July 1 » Canada and Bermuda are linked by telegraph cable.
October 12 » Uddevalla Suffrage Association is formed.
November 29 » The Meiji Constitution goes into effect in Japan, and the first Diet convenes.
December 15 » Hunkpapa Lakota leader Sitting Bull is killed on Standing Rock Indian Reservation, leading to the Wounded Knee Massacre.
Day of marriage May 21, 1915
The temperature on May 21, 1915 was between 11.3 °C and 21.7 °C and averaged 16.9 °C. There was 3.9 mm of rain. There was 2.9 hours of sunshine (18%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-northeast. 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.
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/I90564.php : accessed December 27, 2025), "Tammo Jakob Tammens (1890-????)".
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