Family tree Weening » Johannes Koelstra (1905-)

Personal data Johannes Koelstra 


Household of Johannes Koelstra

He is married to Johanna Maria Laurentia Boersma.

They got married on June 28, 1935 at Gaasterland, Friesland, Nederland, he was 29 years old.Source 2

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Sources

  1. Geboorteregister 1905, Gaasterland
  2. Huwelijksregister 1935, Gaasterland

Historical events

  • The temperature on October 25, 1905 was between -3.5 °C and 8.9 °C and averaged 1.9 °C. There was 7.3 hours of sunshine (72%). The average windspeed was 2 Bft (weak wind) 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 August 1, 1901 to August 16, 1905 the cabinet Kuijper, with Dr. A. Kuijper (AR) as prime minister.
  • In The Netherlands , there was from August 17, 1905 to February 11, 1908 the cabinet De Meester, with Mr. Th. de Meester (unie-liberaal) as prime minister.
  • In the year 1905: Source: Wikipedia
    • The Netherlands had about 5.5 million citizens.
    • March 23 » Eleftherios Venizelos calls for Crete's union with Greece, and begins what is to be known as the Theriso revolt.
    • June 7 » Norway's parliament dissolves its union with Sweden. The vote was confirmed by a national plebiscite on August 13 of that year.
    • September 23 » Norway and Sweden sign the "Karlstad treaty", peacefully dissolving the Union between the two countries.
    • November 18 » Prince Carl of Denmark becomes King Haakon VII of Norway.
    • November 21 » Albert Einstein's paper that leads to the mass–energy equivalence formula, E=mc², is published in the journal Annalen der Physik.
    • December 30 » Former Idaho Governor Frank Steunenberg is assassinated at the front gate of his home in Caldwell.


Same birth/death day

Source: Wikipedia


About the surname Koelstra

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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/I132491.php : accessed October 21, 2026), "Johannes Koelstra (1905-)".