Family tree Weening » Gerrit Koolstra (1904-)

Personal data Gerrit Koolstra 


Household of Gerrit Koolstra

He is married to Jacoba Anna Maria Slootweg.

They got married on September 1, 1926 at 's-Gravenhage, Zuid-Holland, Nederland, he was 22 years old.Source 2

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Timeline Gerrit Koolstra

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Ancestors (and descendant) of Gerrit Koolstra

Marten Hendriks Hoekstra
1827-1902
Janke Jans Schuilinga
1834-1927
Wybe Koolstra
1874-1940

Gerrit Koolstra
1904-????

1926

Jacoba Anna Maria Slootweg
1900-????


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Sources

  1. Geboorteregister 1904, Leeuwarden
  2. (Not public)

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Historical events

Birthday March 12, 1904

  • The temperature on March 12, 1904 was between -1.9 °C and 5.8 °C and averaged 2.3 °C. There was 3.8 hours of sunshine (33%). The average windspeed was 2 Bft (weak wind) and was prevailing from the east-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 August 1, 1901 to August 16, 1905 the cabinet Kuijper, with Dr. A. Kuijper (AR) as prime minister.
  • In the year 1904: Source: Wikipedia
    • The Netherlands had about 5.4 million citizens.
    • January 7 » The distress signal "CQD" is established only to be replaced two years later by "SOS".
    • January 8 » The Blackstone Library is dedicated, marking the beginning of the Chicago Public Library system.
    • February 9 » Russo-Japanese War: Battle of Port Arthur concludes.
    • May 15 » Russo-Japanese War: The Russian minelayer Amur lays a minefield about 15 miles off Port Arthur and sinks Japan's battleships Hatsuse, 15,000 tons, with 496 crew and Yashima.
    • October 20 » Chile and Bolivia sign the Treaty of Peace and Friendship, delimiting the border between the two countries.
    • November 16 » English engineer John Ambrose Fleming receives a patent for the thermionic valve (vacuum tube).

Day of marriage September 1, 1926

  • The temperature on September 1, 1926 was between 15.1 °C and 28.4 °C and averaged 21.1 °C. There was 9.7 hours of sunshine (71%). The average windspeed was 2 Bft (weak wind) 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 August 4, 1925 to March 8, 1926 the cabinet Colijn I, with Dr. H. Colijn (ARP) as prime minister.
  • In The Netherlands , there was from March 8, 1926 to August 10, 1929 the cabinet De Geer I, with Jonkheer mr. D.J. de Geer (CHU) as prime minister.
  • In the year 1926: Source: Wikipedia
    • The Netherlands had about 7.4 million citizens.
    • January 8 » Abdul-Aziz ibn Saud is crowned King of Hejaz.
    • March 15 » The dictator Theodoros Pangalos is elected President of Greece without opposition.
    • April 24 » The Treaty of Berlin is signed. Germany and the Soviet Union each pledge neutrality in the event of an attack on the other by a third party for the next five years.
    • May 28 » The 28 May 1926 coup d'état: Ditadura Nacional is established in Portugal to suppress the unrest of the First Republic.
    • June 23 » The College Board administers the first SAT exam.
    • August 6 » Gertrude Ederle becomes the first woman to swim across the English Channel.


Same birth/death day

Source: Wikipedia


About the surname Koolstra

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The Family tree Weening publication was prepared by .contact the author
When copying data from this family tree, please include a reference to the origin:
Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I133348.php : accessed October 16, 2026), "Gerrit Koolstra (1904-)".