April 14 » The Pan-American Union is founded by the First International Conference of American States in Washington, D.C.
June 1 » The United States Census Bureau begins using Herman Hollerith's tabulating machine to count census returns.
July 1 » Canada and Bermuda are linked by telegraph cable.
November 23 » King William III of the Netherlands dies without a male heir and a special law is passed to allow his daughter Princess Wilhelmina to succeed him.
December 15 » Hunkpapa Lakota leader Sitting Bull is killed on Standing Rock Indian Reservation, leading to the Wounded Knee Massacre.
December 29 » Wounded Knee Massacre on Pine Ridge Indian Reservation, 300 Lakota are killed by the United States 7th Cavalry Regiment.
Day of death October 1, 1971
The temperature on October 1, 1971 was between 10.0 °C and 21.3 °C and averaged 15.7 °C. There was 5.1 hours of sunshine (44%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the south. Source: KNMI
April 19 » Charles Manson is sentenced to death (later commuted to life imprisonment) for conspiracy in the Tate–LaBianca murders.
July 5 » The Twenty-sixth Amendment to the United States Constitution, lowering the voting age from 21 to 18 years, is formally certified by President Richard Nixon.
September 13 » State police and National Guardsmen storm New York's Attica Prison to quell a prison revolt, which claimed 43 lives.
October 21 » A gas explosion kills 22 people at a shopping centre near Glasgow, Scotland.
December 2 » Abu Dhabi, Ajman, Fujairah, Sharjah, Dubai, and Umm al-Quwain form the United Arab Emirates.
December 16 » The United Kingdom recognizes Bahrain's independence, which is commemorated annually as Bahrain's National Day.
When copying data from this family tree, please include a reference to the origin: Hendrik de Graaf, "Family tree Plugboer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-plugboer/I22138.php : accessed February 7, 2026), "Trijntje Vieregge (1890-1971)".
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