Family tree Eman/Swart-Radstok/Attevelt » Dirk Helderman (1886-????)

Personal data Dirk Helderman 


Household of Dirk Helderman

He is married to Hendrika Gerarda Zwart.

They got married on April 25, 1912 at Amsterdam, Nederland, he was 26 years old.

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Timeline Dirk Helderman

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Ancestors (and descendant) of Dirk Helderman

Dirk Helderman
1886-????

1912

Hendrika Gerarda Zwart
1889-????


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Historical events

Day of marriage April 25, 1912

  • The temperature on April 25, 1912 was between 6.3 °C and 19.2 °C and averaged 12.5 °C. There was 12.6 hours of sunshine (87%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-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 February 12, 1908 to August 29, 1913 the cabinet Heemskerk, with Mr. Th. Heemskerk (AR) as prime minister.
  • In the year 1912: Source: Wikipedia
    • The Netherlands had about 6.0 million citizens.
    • March 5 » Italo-Turkish War: Italian forces are the first to use airships for military purposes, employing them for reconnaissance behind Turkish lines.
    • April 10 » RMS Titanic sets sail from Southampton, England on her maiden and only voyage.
    • April 18 » The Cunard liner RMSCarpathia brings 705 survivors from the RMSTitanic to New York City.
    • September 4 » Albanian rebels succeed in their revolt when the Ottoman Empire agrees to fulfill their demands
    • November 19 » First Balkan War: The Serbian Army captures Bitola, ending the five-century-long Ottoman rule of Macedonia.
    • December 28 » The first municipally owned streetcars take to the streets in San Francisco.

About the surname Helderman


The Family tree Eman/Swart-Radstok/Attevelt publication was prepared by .contact the author
When copying data from this family tree, please include a reference to the origin:
Han Eman, "Family tree Eman/Swart-Radstok/Attevelt", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-eman/I4006.php : accessed February 15, 2026), "Dirk Helderman (1886-????)".