Family tree Weening » Johannes Helmholt (1879-1955)

Personal data Johannes Helmholt 


Household of Johannes Helmholt

He is married to Jitske Slotegraaf.

They got married on December 19, 1914 at Marum (Gr), he was 35 years old.Source 3

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Timeline Johannes Helmholt

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Ancestors (and descendant) of Johannes Helmholt

Johannes Helmholt
1879-1955

1914

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Sources

  1. Geboorteregister Grootegast 1879
  2. https://www.graftombe.nl/names/info/1984958/helmholt
  3. Huwelijksregister Marum 1914

Historical events

  • The temperature on March 20, 1879 was about 12.6 °C. The air pressure was 4 kgf/m2 and came mainly from the east-northeast. The airpressure was 76 cm mercury. The atmospheric humidity was 59%. Source: KNMI
  • Koning Willem III (Huis van Oranje-Nassau) was from 1849 till 1890 sovereign of the Netherlands (also known as Koninkrijk der Nederlanden)
  • In The Netherlands , there was from November 3, 1877 to August 20, 1879 the cabinet Kappeijne van de Coppello, with Mr. J. Kappeijne van de Coppello (liberaal) as prime minister.
  • In The Netherlands , there was from August 20, 1879 to April 23, 1883 the cabinet Van Lijnden van Sandenburg, with Mr. C.Th. baron Van Lijnden van Sandenburg (conservatief-AR) as prime minister.
  • In the year 1879: Source: Wikipedia
    • The Netherlands had about 4.0 million citizens.
    • January 22 » The Battle of Isandlwana during the Anglo-Zulu War results in a British defeat.
    • January 25 » The Bulgarian National Bank is founded.
    • February 14 » The War of the Pacific breaks out when the Chilean Army occupies the Bolivian port city of Antofagasta.
    • May 26 » Russia and the United Kingdom sign the Treaty of Gandamak establishing an Afghan state.
    • October 8 » War of the Pacific: The Chilean Navy defeats the Peruvian Navy in the Battle of Angamos.
    • December 21 » World premiere of Henrik Ibsen's A Doll's House at the Royal Theatre in Copenhagen, Denmark.
  • The temperature on December 19, 1914 was between 4.5 °C and 8.1 °C and averaged 6.5 °C. There was 13.3 mm of rain. There was 3.7 hours of sunshine (48%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the south-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 August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
  • In the year 1914: Source: Wikipedia
    • The Netherlands had about 6.2 million citizens.
    • August 12 » World War I: The Battle of Halen a.k.a. Battle of the Silver Helmets a clash between large Belgian and German cavalry formations at Halen, Belgium.
    • August 14 » World War I: Start of the Battle of Lorraine, an unsuccessful French offensive designed to recover the lost province of Moselle from Germany.
    • August 29 » World War I: Start of the Battle of St. Quentin in which the French Fifth Army counter-attacked the invading Germans at Saint-Quentin, Aisne.
    • November 5 » World War I: France and the British Empire declare war on the Ottoman Empire.
    • November 7 » The German colony of Kiaochow Bay and its centre at Tsingtao are captured by Japanese forces.
    • December 15 » A gas explosion at Mitsubishi Hōjō coal mine, in Kyushu, Japan, kills 687.
  • The temperature on March 22, 1955 was between -3.1 °C and 7.8 °C and averaged 2.3 °C. There was 1.8 mm of rain during 2.1 hours. There was 4.3 hours of sunshine (35%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-northeast. 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)
  • In The Netherlands , there was from September 2, 1952 to October 13, 1956 the cabinet Drees II, with Dr. W. Drees (PvdA) as prime minister.
  • In the year 1955: Source: Wikipedia
    • The Netherlands had about 10.7 million citizens.
    • February 18 » Operation Teapot: Teapot test shot "Wasp" is successfully detonated at the Nevada Test Site with a yield of 1.2 kilotons. Wasp is the first of fourteen shots in the Teapot series.
    • May 9 » Cold War: West Germany joins NATO.
    • June 16 » In a futile effort to topple Argentine President Juan Perón, rogue aircraft pilots of the Argentine Navy drop several bombs upon an unarmed crowd demonstrating in favor of Perón in Buenos Aires, killing 364 and injuring at least 800. At the same time on the ground, some soldiers attempt to stage a coup but are suppressed by loyal forces.
    • July 9 » The Russell–Einstein Manifesto calls for a reduction of the risk of nuclear warfare.
    • September 16 » A Zulu-class submarine becomes the first to launch a ballistic missile.
    • November 1 » The Vietnam War begins.


Same birth/death day

Source: Wikipedia

Source: Wikipedia


About the surname Helmholt

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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/I134467.php : accessed February 13, 2026), "Johannes Helmholt (1879-1955)".