May 1 » In Vienna, Austria, Mozart's opera The Marriage of Figaro is performed for the first time.
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.
November 7 » The oldest musical organization in the United States is founded as the Stoughton Musical Society.
November 30 » The Grand Duchy of Tuscany, under Pietro Leopoldo I, becomes the first modern state to abolish the death penalty (later commemorated as Cities for Life Day).
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).
April 8 » Italy and Prussia ally against the Austrian Empire.
July 27 » The first permanent transatlantic telegraph cable is successfully completed, stretching from Valentia Island, Ireland, to Heart's Content, Newfoundland.
July 30 » Armed Confederate veterans in New Orleans riot against a meeting of Radical Republicans, killing 48 people and injuring another 100.
August 17 » The Grand Duchy of Baden announces her withdrawal from the German Confederation and signs a treaty of peace and alliance with Prussia.
August 23 » Austro-Prussian War ends with the Treaty of Prague.
September 22 » The Battle of Curupayty is Paraguay's only significant victory in the Paraguayan War.
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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