April 2 » Dmitry Sipyagin, Minister of Interior of the Russian Empire, is assassinated in the Marie Palace, Saint Petersburg.
April 18 » The 7.5 Mw Guatemala earthquake shakes Guatemala with a maximum Mercalli intensity of VIII (Severe), killing between 800–2,000.
May 8 » In Martinique, Mount Pelée erupts, destroying the town of Saint-Pierre and killing over 30,000 people. Only a handful of residents survive the blast.
May 20 » Cuba gains independence from the United States. Tomás Estrada Palma becomes the country's first President.
June 28 » The U.S. Congress passes the Spooner Act, authorizing President Theodore Roosevelt to acquire rights from Colombia for the Panama Canal.
December 28 » The Syracuse Athletic Club defeated the New York Philadelphians, 5–0, in the first indoor professional football game, which was held at Madison Square Garden.
Day of death January 31, 1961
The temperature on January 31, 1961 was between 5.3 °C and 7.8 °C and averaged 6.3 °C. There was 0.9 mm of rain during 1.5 hours. There was 1.0 hours of sunshine (11%). The almost completely overcast was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
January 17 » U.S. President Dwight D. Eisenhower delivers a televised farewell address to the nation three days before leaving office, in which he warns against the accumulation of power by the "military–industrial complex" as well as the dangers of massive spending, especially deficit spending.
April 12 » Cold War: Space Race: The Soviet cosmonaut Yuri Gagarin becomes the first human to travel into outer space and perform the first manned orbital flight, Vostok 1.
April 23 » Algiers putsch by French generals.
August 21 » American country music singer Patsy Cline returns to record producer Owen Bradley's studio in Nashville, Tennessee to record her vocals to Willie Nelson's "Crazy", which would become her signature song.
September 12 » The African and Malagasy Union is founded.
December 9 » Tanganyika becomes independent from Britain.
When copying data from this family tree, please include a reference to the origin: Peter J van Oss, "Van Oss tree", database, Genealogy Online (https://www.genealogieonline.nl/van-oss-tree/I0392.php : accessed January 4, 2026), "Petronella Gertruda Hoefnagel (1902-1961)".
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