March 16 » King Gustav III of Sweden is shot; he dies on March 29.
April 20 » France declares war against the "King of Hungary and Bohemia", the beginning of French Revolutionary Wars.
July 25 » The Brunswick Manifesto is issued to the population of Paris promising vengeance if the French royal family is harmed.
September 2 » During what became known as the September Massacres of the French Revolution, rampaging mobs slaughter three Roman Catholic bishops, more than two hundred priests, and prisoners believed to be royalist sympathizers.
September 20 » French troops stop an allied invasion of France at the Battle of Valmy.
October 12 » The first celebration of Columbus Day is held in New York City.
Day of death June 20, 1870
The temperature on June 20, 1870 was about 19.4 °C. The air pressure was 6 kgf/m2 and came mainly from the west. The airpressure was 77 cm mercury. The atmospheric humidity was 67%. 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).
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I98097.php : accessed February 10, 2026), "Matthijs Hendrik van Son (1792-1870)".
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