February 27 » Second Boer War: Australian soldiers Harry "Breaker" Morant and Peter Handcock are executed in Pretoria after being convicted of war crimes.
April 18 » The 7.5 Mw Guatemala earthquake shakes Guatemala with a maximum Mercalli intensity of VIII (Severe), killing between 800–2,000.
May 17 » Greek archaeologist Valerios Stais discovers the Antikythera mechanism, an ancient mechanical analog computer.
June 24 » King Edward VII of the United Kingdom develops appendicitis, delaying his coronation.
August 9 » Edward VII and Alexandra of Denmark are crowned King and Queen of the United Kingdom of Great Britain and Ireland.
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 23 » The Portuguese luxury cruise ship Santa Maria is hijacked by opponents of the Estado Novo regime with the intention of waging war until dictator António de Oliveira Salazar is overthrown.
February 13 » An allegedly 500,000-year-old rock is discovered near Olancha, California, US, that appears to anachronistically encase a spark plug.
May 28 » Peter Benenson's article The Forgotten Prisoners is published in several internationally read newspapers. This will later be thought of as the founding of the human rights organization Amnesty International.
September 18 » U.N. Secretary-General Dag Hammarskjöld dies in an air crash while attempting to negotiate peace in the Katanga region of the Democratic Republic of the Congo.
October 1 » The United States Defense Intelligence Agency is formed, becoming the country's first centralized military intelligence organization.
October 27 » NASA tests the first Saturn I rocket in Mission Saturn-Apollo 1.
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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