The temperature on February 12, 1871 was about -3.5 °C. The air pressure was 12 kgf/m2 and came mainly from the south-southeast. The atmospheric humidity was 78%. Source: KNMI
From June 4, 1868 till January 4, 1871 the Netherlands had a cabinet Van Bosse - Fock with the prime ministers Mr. P.P. van Bosse (liberaal) and Mr. C. Fock (liberaal).
In The Netherlands , there was from January 4, 1871 to July 6, 1872 the cabinet Thorbecke III, with Mr. J.R. Thorbecke (liberaal) as prime minister.
January 28 » Franco-Prussian War: The Siege of Paris ends in French defeat and an armistice.
February 17 » The victorious Prussian Army parades through Paris, France, after the end of the Siege of Paris during the Franco-Prussian War.
May 28 » The Paris Commune falls after two months.
September 28 » The Brazilian Parliament passes a law that frees all children thereafter born to slaves, and all government-owned slaves.
October 12 » The British in India enact the Criminal Tribes Act, naming many local communities "Criminal Tribes".
December 26 » Thespis, the first Gilbert and Sullivan collaboration, debuts. It does modestly well, but the two would not collaborate again for four years and the score has been lost.
Day of marriage September 7, 1899
The temperature on September 7, 1899 was about 17.9 °C. The airpressure was 76 cm mercury. The atmospheric humidity was 86%. Source: KNMI
February 16 » Iceland's first football club, Knattspyrnufélag Reykjavíkur, is founded.
March 4 » Cyclone Mahina sweeps in north of Cooktown, Queensland, with a 12 metres (39ft) wave that reaches up to 5 kilometres (3.1mi) inland, killing over 300.
March 6 » Bayer registers "Aspirin" as a trademark.
May 30 » Pearl Hart, a female outlaw of the Old West, robs a stage coach 30 miles southeast of Globe, Arizona.
December 11 » Second Boer War: In the Battle of Magersfontein the Boers commanded by general Piet Cronjé inflict a defeat on the forces of the British Empire commanded by Lord Methuen trying to relieve the Siege of Kimberley.
Day of death April 19, 1954
The temperature on April 19, 1954 was between 2.7 °C and 9.0 °C and averaged 5.5 °C. There was 0.5 mm of rain during 0.4 hours. There was 7.3 hours of sunshine (52%). The partly clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north. Source: KNMI
When copying data from this family tree, please include a reference to the origin: Hans Opperman, "Family tree Opperman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-opperman/I3527.php : accessed March 13, 2026), "Maria Johanna Gerhardina Siepker (1871-1954)".
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