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.
September 11 » The beginning of the Annapolis Convention.
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).
When copying data from this family tree, please include a reference to the origin: Jan De Backer, "Family tree De Backer - Evers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-de-backer-evers/I604699.php : accessed February 6, 2026), "Joannes /Van Gijsel van Geysel (????-1786)".
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