January 4 » Topsy, an elephant, is electrocuted by the owners of Luna Park, Coney Island. The Edison film company records the film Electrocuting an Elephant of Topsy's death.
February 11 » Anton Bruckner's 9th Symphony receives its first performance in Vienna, Austria.
June 16 » The Ford Motor Company is incorporated.
July 23 » The Ford Motor Company sells its first car.
November 17 » The Russian Social Democratic Labour Party splits into two groups: The Bolsheviks (Russian for "majority") and Mensheviks (Russian for "minority").
December 14 » The Wright brothers make their first attempt to fly with the Wright Flyer at Kitty Hawk, North Carolina.
Day of marriage February 5, 1930
The temperature on February 5, 1930 was between 1.6 °C and 4.8 °C and averaged 3.4 °C. There was 7.8 mm of rain during 7.3 hours. The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northwest. Source: KNMI
In The Netherlands , there was from August 10, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
March 12 » Mahatma Gandhi begins the Salt March, a 200-mile march to the sea to protest the British monopoly on salt in India.
April 22 » The United Kingdom, Japan and the United States sign the London Naval Treaty regulating submarine warfare and limiting shipbuilding.
May 1 » "Pluto" is officially proposed for the name of the newly-discovered dwarf planet Pluto by Vesto Slipher in the Lowell Observatory Observation Circular. The name quickly catches on.
October 3 » The German Socialist Labour Party in Poland – Left is founded.
October 5 » British airship R101 crashes in France en route to India on its maiden voyage.
November 11 » Patent number US1781541 is awarded to Albert Einstein and Leó Szilárd for their invention, the Einstein refrigerator.
Day of death July 31, 1961
The temperature on July 31, 1961 was between 5.9 °C and 22.1 °C and averaged 14.8 °C. There was 11.2 hours of sunshine (72%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the ??. Source: KNMI
January 26 » John F. Kennedy appoints Janet G. Travell to be the first woman Physician to the President.
March 1 » United States President John F. Kennedy establishes the Peace Corps.
March 14 » A USAF B-52 bomber crashes near near Yuba City, California whilst carrying nuclear weapons.
April 16 » In a nationally broadcast speech, Cuban leader Fidel Castro declares that he is a Marxist–Leninist and that Cuba is going to adopt Communism.
August 13 » Cold War: East Germany closes the border between the eastern and western sectors of Berlin to thwart its inhabitants' attempts to escape to the West, and construction of the Berlin Wall is started.
October 1 » The United States Defense Intelligence Agency is formed, becoming the country's first centralized military intelligence organization.
When copying data from this family tree, please include a reference to the origin: Serge Oudhoff, "Family tree Oudhoff", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-oudhoff/I741.php : accessed January 10, 2026), "Gerardus Johannes Adrianus Kock (1903-1961)".
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