January 6 » Second Boer War: Having already besieged the fortress at Ladysmith, Boer forces attack it, but are driven back by British defenders.
January 24 » Second Boer War: Boers stop a British attempt to break the Siege of Ladysmith in the Battle of Spion Kop.
April 30 » Hawaii becomes a territory of the United States, with Sanford B. Dole as governor.
June 14 » Hawaii becomes a United States territory.
June 21 » Boxer Rebellion. China formally declares war on the United States, Britain, Germany, France and Japan, as an edict issued from the Empress Dowager Cixi.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
Day of marriage April 10, 1931
The temperature on April 10, 1931 was between 5.7 °C and 8.8 °C and averaged 6.9 °C. There was 1.9 mm of rain during 2.1 hours. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-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.
When copying data from this family tree, please include a reference to the origin: B. Burger, "Family tree Burger", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-burger/I533.php : accessed June 6, 2024), "Leonard "Leo" Mertens (1900-)".
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