June 10 » A landslide dam on the Dadu River created by an earthquake ten days earlier collapses, killing 100,000 in the Sichuan province of China.
June 25 » Gavriil Pribylov discovers St. George Island of the Pribilof Islands in the Bering Sea.
August 8 » Mont Blanc on the French-Italian border is climbed for the first time by Jacques Balmat and Dr. Michel-Gabriel Paccard.
August 11 » Captain Francis Light establishes the British colony of Penang in Malaysia.
August 29 » Shays' Rebellion, an armed uprising of Massachusetts farmers, begins in response to high debt and tax burdens.
December 4 » Mission Santa Barbara is dedicated (on the feast day of Saint Barbara).
Day of death May 23, 1866
The temperature on May 23, 1866 was about 16.0 °C. The air pressure was 8 kgf/m2 and came mainly from the north-northwest. The airpressure was 76 cm mercury. The atmospheric humidity was 40%. Source: KNMI
In The Netherlands , there was from February 1, 1862 to February 10, 1866 the cabinet Thorbecke II, with Mr. J.R. Thorbecke (liberaal) as prime minister.
In The Netherlands , there was from February 10, 1866 to June 1, 1866 the cabinet Fransen van de Putte, with I.D. Fransen van de Putte (liberaal) as prime minister.
From June 1, 1866 till June 4, 1868 the Netherlands had a cabinet Van Zuijlen van Nijevelt - Heemskerk with the prime ministers Mr. J.P.J.A. graaf Van Zuijlen van Nijevelt (AR) and Mr. J. Heemskerk Azn. (conservatief).
January 12 » The Royal Aeronautical Society is formed in London.
April 8 » Italy and Prussia ally against the Austrian Empire.
June 2 » The Fenians defeat Canadian forces at Ridgeway and Fort Erie, but the raids end soon after.
June 7 » One thousand eight hundred Fenian raiders are repelled back to the United States after looting and plundering the Saint-Armand and Frelighsburg areas of Canada East.
July 20 » Austro-Prussian War: Battle of Lissa: The Austrian Navy, led by Admiral Wilhelm von Tegetthoff, defeats the Italian Navy near the island of Vis in the Adriatic Sea.
October 19 » In accordance with the Treaty of Vienna, Austria cedes Veneto and Mantua to France, which immediately awards them to Italy in exchange for the earlier Italian acquiescence to the French annexation of Savoy and Nice.
When copying data from this family tree, please include a reference to the origin: Wim Willard een Larinees, "Family tree Willard", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-willard/I3528.php : accessed March 13, 2026), "Joannes "Jan" Post (Porst) (-1866)".
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