Family tree Weening » Jan Koolstra (1911-)

Personal data Jan Koolstra 


Household of Jan Koolstra

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Timeline Jan Koolstra

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Ancestors (and descendant) of Jan Koolstra

Wybe Koolstra
1874-1940

Jan Koolstra
1911-????


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Sources

  1. (Not public)

Historical events

  • The temperature on February 25, 1911 was between 3.1 °C and 8.9 °C and averaged 6.1 °C. There was 0.4 mm of rain. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-southwest. 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 1911: Source: Wikipedia
    • The Netherlands had about 6.0 million citizens.
    • January 3 » A magnitude 7.7 earthquake destroys the city of Almaty in Russian Turkestan.
    • January 14 » Roald Amundsen's South Pole expedition makes landfall on the eastern edge of the Ross Ice Shelf.
    • January 21 » The first Monte Carlo Rally takes place.
    • August 29 » Ishi, considered the last Native American to make contact with European Americans, emerges from the wilderness of northeastern California.
    • December 27 » "Jana Gana Mana", the national anthem of India, is first sung in the Calcutta Session of the Indian National Congress.
    • December 29 » Mongolia gains independence from the Qing dynasty, enthroning 8th Jebtsundamba Khutughtu as Khagan of Mongolia.


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/I133357.php : accessed February 19, 2026), "Jan Koolstra (1911-)".