1791 was a simple year.
June 14 — Le Chapelle's law passed in France
June 23 — French King Louis XVI and Queen Marie Antoinette are discovered attempting to escape and arrested at Varennes.
August 4 — The Peace of Svisht was signed, which determined the border between Austria and the Ottoman Empire and ended the Austro-Turkish War.
August 22 — A slave revolt breaks out in the French colony of San Domingo, beginning the Haitian Revolution.
On September 30, Mozart's opera "The Magic Flute" premiered in Vienna.
December 15 — The first 10 amendments to the US Constitution, collectively known as the Bill of Rights, are ratified.
April 23 — James Buchanan, 15th President of the USA
September 13 — Avram Petronijević, Serbian politician. (†1852)
September 21 — Istvan Sechenyi, Hungarian politician
December 5 - Wolfgang Amadeus Mozart, Austrian composer (*1756)
List of dates
List of years
List of decades
List of centuries
List of the Millennium