January 9 » Jean-Pierre Blanchard becomes the first person to fly in a balloon in the United States.
May 15 » Diego Marín Aguilera flies a glider for "about 360 meters", at a height of 5–6 meters, during one of the first attempted manned flights.
August 12 » The Rhône and Loire départments are created when the former département of Rhône-et-Loire is split into two.
August 27 » French Revolutionary Wars: The city of Toulon revolts against the French Republic and admits the British and Spanish fleets to seize its port, leading to the Siege of Toulon by French Revolutionary forces.
November 3 » French playwright, journalist and feminist Olympe de Gouges is guillotined.
December 9 » New York City's first daily newspaper, the American Minerva, is established by Noah Webster.
Day of death April 11, 1871
The temperature on April 11, 1871 was about 11.0 °C. The air pressure was 2 kgf/m2 and came mainly from the south east. The atmospheric humidity was 34%. 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.
May 21 » Opening of the first rack railway in Europe, the Rigi Bahnen on Mount Rigi.
September 20 » Bishop John Coleridge Patteson, first bishop of Melanesia, is martyred on Nukapu, now in the Solomon Islands.
October 8 » The Great Chicago Fire and the much deadlier Peshtigo Fire break out.
November 16 » The National Rifle Association receives its charter from New York State.
December 24 » The opera Aida premieres in Cairo, Egypt.
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.
When copying data from this family tree, please include a reference to the origin: Keith Mann Spencer, "Mann Spencer Tree", database, Genealogy Online (https://www.genealogieonline.nl/mann-spencer-tree/P997.php : accessed January 14, 2026), "Ann Ladson (1793-1871)".
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