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.
May 26 » The original manuscript of William Bradford's history, "Of Plymouth Plantation" is returned to the Governor of Massachusetts by the Bishop of London after being taken during the American Revolutionary War.
June 22 » British colonial officers Charles Walter Rand and Lt. Charles Egerton Ayerst are assassinated in Pune, Maharashtra, India by the Chapekar brothers and Mahadeo Vinayak Ranade, who are later caught and hanged.
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.
September 1 » The Tremont Street Subway in Boston opens, becoming the first underground rapid transit system in North America.
September 10 » Lattimer massacre: A sheriff's posse kills 19 unarmed striking immigrant miners in Lattimer, Pennsylvania, United States.
Day of marriage July 7, 1926
The temperature on July 7, 1926 was between 9.8 °C and 22.1 °C and averaged 17.0 °C. There was 0.1 mm of rain. There was 5.4 hours of sunshine (33%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south east. Source: KNMI
January 8 » Crown Prince Nguyễn Phúc Vĩnh Thuỵ ascends the throne to become the last monarch of Vietnam.
March 15 » The dictator Theodoros Pangalos is elected President of Greece without opposition.
March 16 » History of Rocketry: Robert Goddard launches the first liquid-fueled rocket, at Auburn, Massachusetts.
April 6 » Varney Airlines makes its first commercial flight (Varney is the root company of United Airlines).
June 23 » The College Board administers the first SAT exam.
September 8 » Germany is admitted to the League of Nations.
Day of death May 21, 1958
The temperature on May 21, 1958 was between 6.8 °C and 14.6 °C and averaged 10.7 °C. There was 4.6 hours of sunshine (29%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
May 13 » During a visit to Caracas, Venezuela, Vice President Richard Nixon's car is attacked by anti-American demonstrators.
May 30 » Memorial Day: The remains of two unidentified American servicemen, killed in action during World War II and the Korean War respectively, are buried at the Tomb of the Unknown Soldier in Arlington National Cemetery.
July 29 » U.S. President Dwight D. Eisenhower signs into law the National Aeronautics and Space Act, which creates the National Aeronautics and Space Administration (NASA).
October 4 » The current constitution of France is adopted.
November 12 » A team of rock climbers led by Warren Harding completes the first ascent of The Nose on El Capitan in Yosemite Valley.
December 28 » "Greatest Game Ever Played": Baltimore Colts defeat the New York Giants in the first ever National Football League sudden death overtime game at New York's Yankee Stadium.
When copying data from this family tree, please include a reference to the origin: Eva Drenth, "Family tree Diverse", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-drenth/I1359.php : accessed February 23, 2026), "Hendrik Ulrich (1897-1958)".
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