January 10 » The first great Texas oil gusher is discovered at Spindletop in Beaumont, Texas.
September 2 » Vice President of the United States Theodore Roosevelt utters the famous phrase, "Speak softly and carry a big stick" at the Minnesota State Fair.
September 17 » Second Boer War: A Boer column defeats a British force at the Battle of Blood River Poort.
September 17 » Second Boer War: Boers capture a squadron of the 17th Lancers at the Battle of Elands River.
November 8 » Gospel riots: Bloody clashes take place in Athens following the translation of the Gospels into demotic Greek.
November 27 » The U.S. Army War College is established.
Day of marriage April 23, 1924
The temperature on April 23, 1924 was between -0.7 °C and 10.5 °C and averaged 5.9 °C. There was 0.2 mm of rain. There was 8.8 hours of sunshine (61%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north. Source: KNMI
In The Netherlands , there was from September 19, 1922 to August 4, 1925 the cabinet Ruys de Beerenbrouck II, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 22 » Ramsay MacDonald becomes the first Labour Prime Minister of the United Kingdom.
February 1 » Russia–United Kingdom relations are restored, over six years after the Communist revolution.
April 1 » Adolf Hitler is sentenced to five years imprisonment for his participation in the "Beer Hall Putsch" but spends only nine months in jail.
November 4 » Nellie Tayloe Ross of Wyoming becomes the first female elected as governor in the United States.
December 19 » German serial killer Fritz Haarmann is sentenced to death for a series of murders.
December 20 » Adolf Hitler is released from Landsberg Prison.
Day of death May 15, 1953
The temperature on May 15, 1953 was between 8.1 °C and 20.5 °C and averaged 14.0 °C. There was 7.8 mm of rain during 3.0 hours. There was 2.7 hours of sunshine (17%). The heavily clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
February 11 » Cold War: U.S. President Dwight D. Eisenhower denies all appeals for clemency for Julius and Ethel Rosenberg.
April 24 » Winston Churchill is knighted by Queen Elizabeth II.
April 29 » The first U.S. experimental 3D television broadcast showed an episode of Space Patrol on Los Angeles ABC affiliate KECA-TV.
May 4 » Ernest Hemingway wins the Pulitzer Prize for The Old Man and the Sea.
August 12 » The 7.2 Ms Ionian earthquake shakes the southern Ionian Islands with a maximum Mercalli intensity of X (Extreme). Between 445 and 800 people are killed.
August 22 » The penal colony on Devil's Island is permanently closed.
When copying data from this family tree, please include a reference to the origin: Allard van Woerkom, "Family tree Sillevis", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-sillevis/I125.php : accessed February 16, 2026), "Pieter Sillevis (1901-1953)".
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