February 28 » Queen Ranavalona III, the last monarch of Madagascar, is deposed by a French military force.
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.
May 26 » Dracula, a Gothic horror novel by Irish author Bram Stoker, is published.
May 26 » The original manuscript of William Bradford's history, "Of Plymouth Plantation" is returned to the Governor of Massachusetts by the Bishop of London after being taken during the American Revolutionary War.
July 2 » British-Italian engineer Guglielmo Marconi obtains a patent for radio in London.
August 31 » Thomas Edison patents the Kinetoscope, the first movie projector.
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
February 23 » German theoretical physicist Werner Heisenberg writes a letter to fellow physicist Wolfgang Pauli, in which he describes his uncertainty principle for the first time.
April 7 » The first long-distance public television broadcast (from Washington, D.C., to New York City, displaying the image of Commerce Secretary Herbert Hoover).
April 12 » Shanghai massacre of 1927: Chiang Kai-shek orders the Chinese Communist Party members executed in Shanghai, ending the First United Front.
April 19 » Mae West is sentenced to ten days in jail for obscenity for her play Sex.
July 10 » Kevin O'Higgins TD, Vice-President of the Executive Council of the Irish Free State is assassinated by the IRA.
December 11 » Guangzhou Uprising: Communist Red Guards launch an uprising in Guangzhou, China, taking over most of the city and announcing the formation of a Guangzhou Soviet.
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.
March 27 » Silver Thursday: A steep fall in silver prices, resulting from the Hunt Brothers attempting to corner the market in silver, leads to panic on commodity and futures exchanges.
April 3 » US Congress restores a federal trust relationship with the 501 members of the Shvwits, Kanosh, Koosharem, and the Indian Peaks and Cedar City bands of the Paiute people of Utah.
May 9 » In Norco, California, five masked gunmen hold up a Security Pacific bank, leading to a violent shoot-out and one of the largest pursuits in California history. Two of the gunmen and one police officer are killed and thirty-three police and civilian vehicles are destroyed in the chase.
May 18 » Mount St. Helens erupts in Washington, United States, killing 57 people and causing $3billion in damage.
May 20 » In a referendum in Quebec, the population rejects, by 60% of the vote, a government proposal to move towards independence from Canada.
September 22 » Iraq invades Iran.
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.
May 8 » The World Health Organization confirms the eradication of smallpox.
May 14 » Salvadoran Civil War: the Sumpul River massacre occurs in Chalatenango, El Salvador.
August 2 » A bomb explodes at the railway station in Bologna, Italy, killing 85 people and wounding more than 200.
September 5 » The Gotthard Road Tunnel opens in Switzerland as the world's longest highway tunnel at 10.14 miles (16.32km) stretching from Göschenen to Airolo.
September 22 » Iraq invades Iran.
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 18, 2026), "Hendrika Vliek (1897-1980)".
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