January 23 » Second Boer War: The Battle of Spion Kop between the forces of the South African Republic and the Orange Free State and British forces ends in a British defeat.
February 7 » A Chinese immigrant in San Francisco falls ill to bubonic plague in the first plague epidemic in the continental United States.
February 27 » The British Labour Party is founded.
February 28 » The Second Boer War: The 118-day "Siege of Ladysmith" is lifted.
July 29 » In Italy, King Umberto I of Italy is assassinated by the anarchist Gaetano Bresci.
October 19 » Max Planck discovers Planck's law of black-body radiation.
Day of death August 12, 1961
The temperature on August 12, 1961 was between 6.7 °C and 18.0 °C and averaged 14.0 °C. There was 4.8 hours of sunshine (32%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northwest. Source: KNMI
April 17 » Bay of Pigs Invasion: A group of Cuban exiles financed and trained by the CIA lands at the Bay of Pigs in Cuba with the aim of ousting Fidel Castro.
May 4 » Malcolm Ross and Victor Prather attain a new altitude record for manned balloon flight ascending in the Strato-Lab V open gondola to 113,740 feet (34.67km).
June 16 » While on tour with the Kirov Ballet in Paris, Rudolf Nureyev defects from the Soviet Union.
July 21 » Mercury program: Mercury-Redstone 4 Mission: Gus Grissom piloting Liberty Bell 7 becomes the second American to go into space (in a suborbital mission).
July 23 » The Sandinista National Liberation Front is founded in Nicaragua.
August 25 » President Jânio Quadros of Brazil resigns after just seven months in power, initiating a political crisis that culminates in a military coup in 1964.
When copying data from this family tree, please include a reference to the origin: J Eijsermans, "Eijsermans family tree", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-eijsermans/I522998.php : accessed January 7, 2026), "Hiltje (Hil) Welles (1900-1961)".
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