Family tree Coster » Janna Koolen (± 1886-1949)

Personal data Janna Koolen 


Household of Janna Koolen

She is married to Willem Fredrik Ouwerkerk.

They got married on June 12, 1912 at Arnhem.

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Timeline Janna Koolen

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Ancestors (and descendant) of Janna Koolen


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Historical events

Day of marriage June 12, 1912

  • The temperature on June 12, 1912 was between 12.1 °C and 22.6 °C and averaged 17.1 °C. There was 5.8 hours of sunshine (35%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
  • Koningin Wilhelmina (Huis van Oranje-Nassau) was from 1890 till 1948 sovereign of the Netherlands (also known as Koninkrijk der Nederlanden)
  • In The Netherlands , there was from February 12, 1908 to August 29, 1913 the cabinet Heemskerk, with Mr. Th. Heemskerk (AR) as prime minister.
  • In the year 1912: Source: Wikipedia
    • The Netherlands had about 6.0 million citizens.
    • January 6 » German geophysicist Alfred Wegener first presents his theory of continental drift.
    • July 8 » Henrique Mitchell de Paiva Couceiro leads an unsuccessful royalist attack against the First Portuguese Republic in Chaves.
    • September 28 » Corporal Frank S. Scott of the United States Army becomes the first enlisted man to die in an airplane crash.
    • October 18 » First Balkan War: King Peter I of Serbia issues a declaration "To the Serbian People", as his country joins the war.
    • November 7 » The Deutsche Opernhaus (now Deutsche Oper Berlin) opens in the Berlin neighborhood of Charlottenburg, with a production of Beethoven's Fidelio.
    • November 12 » The frozen bodies of Robert Scott and his men are found on the Ross Ice Shelf in Antarctica.

Day of death February 1, 1949

  • The temperature on February 1, 1949 was between -1.9 °C and 4.3 °C and averaged 1.1 °C. There was 0.1 mm of rain during 0.2 hours. There was 2.2 hours of sunshine (24%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north. Source: KNMI
  • Koningin Juliana (Huis van Oranje-Nassau) was from September 4, 1948 till April 30, 1980 sovereign of the Netherlands (also known as Koninkrijk der Nederlanden)
  • From August 7, 1948 till March 15, 1951 the Netherlands had a cabinet Drees - Van Schaik with the prime ministers Dr. W. Drees (PvdA) and Mr. J.R.H. van Schaik (KVP).
  • In the year 1949: Source: Wikipedia
    • The Netherlands had about 9.9 million citizens.
    • January 11 » The first "networked" television broadcasts took place as KDKA-TV in Pittsburgh, Pennsylvania goes on the air connecting the east coast and mid-west programming.
    • January 26 » The Hale telescope at Palomar Observatory sees first light under the direction of Edwin Hubble, becoming the largest aperture optical telescope (until BTA-6 is built in 1976).
    • April 28 » The Hukbalahap are accused of assassinating former First Lady of the Philippines Aurora Quezon, while she is en route to dedicate a hospital in memory of her late husband; her daughter and ten others are also killed.
    • September 29 » The Communist Party of China writes the Common Programme for the future People's Republic of China.
    • October 7 » The communist German Democratic Republic (East Germany) is formed.
    • October 28 » An Air France Lockheed Constellation crashes in the Azores, killing all 48 people on board.


Same birth/death day

Source: Wikipedia


About the surname Koolen

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The Family tree Coster publication was prepared by .contact the author
When copying data from this family tree, please include a reference to the origin:
Frank Coster, "Family tree Coster", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_coster/I5296.php : accessed January 6, 2026), "Janna Koolen (± 1886-1949)".