March 7 » Second Boer War: Boers, led by Koos de la Rey, inflict the biggest defeat upon the British since the beginning of the war, at Tweebosch.
March 18 » Macario Sakay issues Presidential Order No. 1 of his Tagalog Republic.
April 2 » Dmitry Sipyagin, Minister of Interior of the Russian Empire, is assassinated in the Marie Palace, Saint Petersburg.
April 18 » The 7.5 Mw Guatemala earthquake shakes Guatemala with a maximum Mercalli intensity of VIII (Severe), killing between 800–2,000.
August 9 » Edward VII and Alexandra of Denmark are crowned King and Queen of the United Kingdom of Great Britain and Ireland.
August 22 » Cadillac Motor Company is founded.
Day of marriage July 12, 1930
The temperature on July 12, 1930 was between 8.2 °C and 15.9 °C and averaged 12.5 °C. There was 44.8 mm of rain during 13.2 hours. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from August 10, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 6 » The first diesel-powered automobile trip is completed, from Indianapolis, Indiana, to New York, New York.
January 26 » The Indian National Congress declares 26 January as Independence Day or as the day for Poorna Swaraj ("Complete Independence") which occurred 17 years later.
March 6 » International Unemployment Day demonstrations globally initiated by the Comintern.
July 7 » Industrialist Henry J. Kaiser begins construction of Boulder Dam (now known as Hoover Dam).
August 16 » The first British Empire Games were opened in Hamilton, Ontario by the Governor General of Canada, the Viscount Willingdon.
October 3 » The German Socialist Labour Party in Poland – Left is founded.
When copying data from this family tree, please include a reference to the origin: Alexander Roessen, "Family tree Roessen", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-roessen/I9526.php : accessed March 6, 2026), "Jantje de Vries (1902-)".
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