January 17 » El Yunque National Forest in Puerto Rico becomes part of the United States National Forest System as the Luquillo Forest Reserve.
April 26 » Atlético Madrid Association football club is founded
August 2 » The Ilinden–Preobrazhenie Uprising against the Ottoman Empire begins.
August 3 » Macedonian rebels in Kruševo proclaim the Kruševo Republic, which exists for only ten days before Ottoman Turks lay waste to the town.
September 27 » The Wreck of the Old 97, an American rail disaster that became the subject of a popular ballad.
December 30 » A fire at the Iroquois Theater in Chicago, Illinois kills at least 605.
Day of marriage December 15, 1926
The temperature on December 15, 1926 was between -0.7 °C and 5.4 °C and averaged 2.2 °C. There was 6.2 hours of sunshine (80%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-northwest. 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.
April 24 » The Treaty of Berlin is signed. Germany and the Soviet Union each pledge neutrality in the event of an attack on the other by a third party for the next five years.
May 25 » Sholom Schwartzbard assassinates Symon Petliura, the head of the government of the Ukrainian People's Republic, which is in government-in-exile in Paris.
September 8 » Germany is admitted to the League of Nations.
October 31 » Last issue of the independent Italian newspaper Il Mondo, thereafter suppressed by the Mussolini regime
Day of death May 9, 1956
The temperature on May 9, 1956 was between 6.7 °C and 20.4 °C and averaged 14.0 °C. There was 1.6 mm of rain during 1.4 hours. There was 3.9 hours of sunshine (25%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
February 25 » In his speech On the Cult of Personality and Its Consequences, Nikita Khrushchev, leader of the Soviet Union, denounces Stalin.
May 24 » The first Eurovision Song Contest is held in Lugano, Switzerland.
October 8 » The New York Yankees's Don Larsen pitches the only perfect game in a World Series.
October 14 » Dr. B. R. Ambedkar, leader of India's Untouchable caste, converts to Buddhism along with 385,000 of his followers (see Neo-Buddhism).
November 4 » Soviet troops enter Hungary to end the Hungarian revolution against the Soviet Union that started on October 23. Thousands are killed, more are wounded, and nearly a quarter million leave the country.
November 7 » Hungarian Revolution: János Kádár returns to Budapest in a Soviet armored convoy, officially taking office as the next Hungarian leader. By this point, most armed resistance has been defeated.
When copying data from this family tree, please include a reference to the origin: Nico de Kunder, "Family tree De Kunder", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-de-kunder/I3313.php : accessed December 30, 2025), "Jan Pothof (1903-1956)".
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