February 1 » Shinhan Bank, the oldest bank in South Korea, opens in Seoul.
April 30 » J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
June 16 » A treaty annexing the Republic of Hawaii to the United States is signed; the Republic would not be dissolved until a year later.
July 2 » British-Italian engineer Guglielmo Marconi obtains a patent for radio in London.
September 10 » Lattimer massacre: A sheriff's posse kills 19 unarmed striking immigrant miners in Lattimer, Pennsylvania, United States.
September 11 » After months of pursuit, generals of Menelik II of Ethiopia capture Gaki Sherocho, the last king of Kaffa, bringing an end to that ancient kingdom.
Day of marriage May 13, 1927
The temperature on May 13, 1927 was between 0.1 °C and 11.8 °C and averaged 6.0 °C. There was 0.7 mm of rain. There was 7.5 hours of sunshine (48%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
March 15 » The first Women's Boat Race between the University of Oxford and the University of Cambridge takes place on The Isis in Oxford.
April 23 » Cardiff City defeat Arsenal in the FA Cup Final, the only time it has been won by a team not based in England.
July 4 » First flight of the Lockheed Vega.
July 15 » Massacre of July 15, 1927: Eighty-nine protesters are killed by the Austrian police in Vienna.
August 7 » The Peace Bridge opens between Fort Erie, Ontario and Buffalo, New York.
November 21 » Columbine Mine massacre: Striking coal miners are allegedly attacked with machine guns by a detachment of state police dressed in civilian clothes.
Day of death February 11, 1980
The temperature on February 11, 1980 was between 1.3 °C and 8.8 °C and averaged 5.6 °C. There was 0.4 mm of rain during 0.3 hours. There was 0.2 hours of sunshine (2%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
January 29 » The Rubik's Cube makes its international debut at the Ideal Toy Corp. in Earl's Court, London.
March 24 » El Salvadorian Archbishop Óscar Romero is assassinated while celebrating Mass in San Salvador.
May 18 » Mount St. Helens erupts in Washington, United States, killing 57 people and causing $3billion in damage.
May 18 » Students in Gwangju, South Korea begin demonstrations calling for democratic reforms.
August 1 » A train crash kills 18 people in County Cork, Ireland.
October 30 » El Salvador and Honduras agree to put the border dispute fought over in 1969's Football War before the International Court of Justice.
Day of burial February 16, 1980
The temperature on February 16, 1980 was between 5.1 °C and 7.5 °C and averaged 6.2 °C. There was -0.1 mm of rain. There was 0.4 hours of sunshine (4%). The almost completely overcast was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
January 28 » USCGCBlackthorn collides with the tanker Capricorn while leaving Tampa, Florida and capsizes, killing 23 Coast Guard crewmembers.
February 24 » The United States Olympic hockey team completes its Miracle on Ice by defeating Finland 4–2 to win the gold medal.
May 17 » On the eve of presidential elections, Maoist guerrilla group Shining Path attacks a polling location in Chuschi (a town in Ayacucho), starting the Internal conflict in Peru.
June 1 » Cable News Network (CNN) begins broadcasting.
June 10 » The African National Congress in South Africa publishes a call to fight from their imprisoned leader Nelson Mandela.
October 30 » El Salvador and Honduras agree to put the border dispute fought over in 1969's Football War before the International Court of Justice.
When copying data from this family tree, please include a reference to the origin: Tijs van den Brink, "Parentele of Geurt Jacobs", database, Genealogy Online (https://www.genealogieonline.nl/geurt-jacobs/I35234.php : accessed February 9, 2026), "Hendrika Vliek (1897-1980)".
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