Haags Gemeentearchief te Den Haag, BS Geboorte Ambtenaar van de burgerlijke stand van de gemeente 's-Gravenhage, 's-Gravenhage, archief 0335-01, inventarisnummer 512, 10-06-1911, Nadere toegang op het geboorteregister van de gemeente 's-Gravenhage, aktenummer 3213
Haags Gemeentearchief te Den Haag, BS Huwelijk Ambtenaar van de burgerlijke stand van de gemeente 's-Gravenhage, 's-Gravenhage, archief 0335-01, inventarisnummer 1123, 07-04-1937, Nadere toegang op het huwelijksregister van de gemeente 's-Gravenhage, aktenummer B334
The temperature on June 8, 1911 was between 10.0 °C and 21.2 °C and averaged 15.4 °C. There was 7.1 hours of sunshine (43%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
January 21 » The first Monte Carlo Rally takes place.
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
June 22 » Mexican Revolution: Government forces bring an end to the Magonista rebellion of 1911 in the Second Battle of Tijuana.
August 29 » The Canadian Naval Service becomes the Royal Canadian Navy.
September 29 » Italy declares war on the Ottoman Empire.
October 10 » The day after a bomb explodes prematurely, the Wuchang Uprising begins against the Chinese monarchy.
Day of marriage April 7, 1937
The temperature on April 7, 1937 was between 6.1 °C and 14.1 °C and averaged 10.5 °C. There was 7.5 mm of rain during 4.1 hours. There was 0.2 hours of sunshine (2%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
February 11 » The Flint sit-down strike ends when General Motors recognizes the United Auto Workers trade union.
July 7 » The Marco Polo Bridge Incident provides the Imperial Japanese Army with a pretext for starting the Second Sino-Japanese War.
July 26 » Spanish Civil War: End of the Battle of Brunete with the Nationalist victory.
August 28 » Toyota Motors becomes an independent company.
November 8 » The Nazi exhibition Der ewige Jude ("The Eternal Jew") opens in Munich.
December 16 » Theodore Cole and Ralph Roe attempt to escape from the American federal prison on Alcatraz Island in San Francisco Bay; neither is ever seen again.
When copying data from this family tree, please include a reference to the origin: Gert Jonker, "Family tree Jonker", database, Genealogy Online (https://www.genealogieonline.nl/jonker_stamboom/I21756.php : accessed February 17, 2026), "Johannes Catharinus Jonker (1911-)".
Copy warning
Genealogical publications are copyright protected. Although data is often retrieved from public archives, the searching, interpreting, collecting, selecting and sorting of the data results in a unique product. Copyright protected work may not simply be copied or republished.
Please stick to the following rules
Request permission to copy data or at least inform the author, chances are that the author gives permission, often the contact also leads to more exchange of data.
Do not use this data until you have checked it, preferably at the source (the archives).
State from whom you have copied the data and ideally also his/her original source.