Family tree Ype Ypes (waaronder van der Meulen) » Sjoerdtje Groustra (1899-????)

Personal data Sjoerdtje Groustra 


Household of Sjoerdtje Groustra

She is married to Johannes Bauke Kooistra.

They got married on May 20, 1920 at Hennaarderadeel (, she was 21 years old.

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Timeline Sjoerdtje Groustra

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Ancestors (and descendant) of Sjoerdtje Groustra


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Historical events

Day of marriage May 20, 1920

  • The temperature on May 20, 1920 was between 6.4 °C and 15.9 °C and averaged 11.2 °C. There was 6.8 mm of rain. There was 0.1 hours of sunshine (1%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north. 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 September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
  • In the year 1920: Source: Wikipedia
    • The Netherlands had about 6.8 million citizens.
    • January 17 » Alcohol Prohibition begins in the United States as the Volstead Act goes into effect.
    • January 19 » The United States Senate votes against joining the League of Nations.
    • March 12 » The Kapp Putsch begins when the Marinebrigade Ehrhardt is ordered to march on Berlin.
    • March 19 » The United States Senate rejects the Treaty of Versailles for the second time (the first time was on November 19, 1919).
    • August 20 » The first commercial radio station, 8MK (now WWJ), begins operations in Detroit.
    • September 1 » The Fountain of Time opens as a tribute to the 100 years of peace between the United States and Great Britain following the Treaty of Ghent.

About the surname Groustra

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The Family tree Ype Ypes (waaronder van der Meulen) publication was prepared by .contact the author
When copying data from this family tree, please include a reference to the origin:
Irene Jolanda van der Meulen, "Family tree Ype Ypes (waaronder van der Meulen)", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-ype-ypes/I6776.php : accessed January 23, 2026), "Sjoerdtje Groustra (1899-????)".