Editing 1791 (section)

=== July&ndash;September ===
<gallery>
File:Malapeau_Claude-Nicolas_Translation_de_Voltaire_au_Panthéon.jpg|Translation of [[Voltaire]]
File:PriestleyRiotsOldMeeting.jpg|[[Priestley Riots]]
File:Fusillade du Champ de Mars (1791, 17 juillet).jpg|[[Champ de Mars massacre]]
File:Pillnitzer Deklaration.jpg|[[Declaration of Pillnitz]]
</gallery>
* [[July 8]] &ndash; Austrian composer [[Joseph Haydn]], on a visit to England, is awarded an honorary doctorate of music at the [[University of Oxford]].
* [[July 11]] &ndash; The ashes of [[Voltaire]] are transferred to the ''[[Panthéon]]'' in Paris.
* [[July 14]]&ndash;[[July 17|17]] &ndash; [[Priestley Riots]] against [[Dissenter]]s in [[Birmingham]], England.
* [[July 17]] &ndash; [[French Revolution]]: The [[Champ de Mars massacre]] occurs in Paris.
* [[August 4]] &ndash; The [[Treaty of Sistova]] is signed, ending the [[Ottoman–Habsburg wars]].
* [[August 6]] &ndash; The [[Brandenburg Gate]] in Berlin (Prussia) is finished.
* [[August 7]] &ndash; [[George Hammond (diplomat)|George Hammond]] is appointed as Great Britain's first minister to the United States.<ref name=Harper1791/>
* [[August 21]] &ndash; [[Haitian Revolution]]: A [[slave rebellion]] breaks out in the French colony of [[Saint-Domingue]].
* [[August 26]] &ndash; [[John Fitch (inventor)|John Fitch]] is granted a patent for the [[steamboat]] in the United States.
* [[August 27]]
** [[Declaration of Pillnitz]]: A proclamation by [[Frederick William II of Prussia]] and the Habsburg [[Leopold II, Holy Roman Emperor]], affirms their wish to "put the King of France in a state to strengthen the bases of monarchic government." 
** [[Third Anglo-Mysore War]]: [[Battle of Tellicherry]] &ndash; Off the south-west coast of India, a British [[Royal Navy]] patrol forces a French convoy bound for [[Kingdom of Mysore|Mysore]] to surrender.
* [[September 5]]
**An ordinance is written barring the game of baseball within 80 yards of the Meeting House in [[Pittsfield, Massachusetts]], the first known reference to the game of [[baseball]] in North America.<ref>{{cite web|url=https://ourgame.mlblogs.com/the-pittsfield-baseball-bylaw-of-1791-what-it-means-940a3ccf08db|first=John|last=Thorn|title=The Pittsfield "Baseball" Bylaw of 1791: What It Means|date=2011-08-03|work=Our Game|access-date=2019-11-04}}</ref>
** [[Declaration of the Rights of Woman and of the Female Citizen]] is written by activist [[Olympe de Gouges]] in response to the Declaration of the Rights of Man and of the Citizen.<ref>[https://www.iep.utm.edu/gouges/ Internet Encyclopedia of Philosophy]</ref>
* [[September 6]] &ndash; [[Wolfgang Amadeus Mozart]]'s ''[[opera seria]]'', ''[[La clemenza di Tito]]'', premières at the [[Estates Theatre]] in [[Prague]] to mark the coronation of [[Leopold II, Holy Roman Emperor|Leopold II]] as King of [[Kingdom of Bohemia|Bohemia]].  
* [[September 9]] &ndash; The capital of the United States, [[Washington, D.C.]], is named after the incumbent 1st President [[George Washington]]. 
* [[September 12]] &ndash; The first serious secondary education school open to girls in Denmark, the ''[[Døtreskolen af 1791]]'', is founded in Copenhagen. 
* [[September 13]] &ndash; [[French Revolution]]: [[Louis XVI of France]] accepts the final version of the completed constitution.
* [[September 14]] &ndash; [[French Revolution]]: The Papal States lose Avignon to Revolutionary France.
* [[September 25]] &ndash; [[Mission Santa Cruz]] is founded by Basque Franciscan Father [[Fermín Lasuén]], becoming the 12th mission in the [[California mission]] chain.
* [[September 28]] &ndash; [[French Revolution]]: The law on [[Jewish emancipation]] is promulgated in France, the first such legislation in modern Europe.
* [[September 30]] &ndash; [[Wolfgang Amadeus Mozart]]'s [[singspiel]] opera ''[[The Magic Flute]]'' (''Die Zauberflöte'') premières at the [[Theater auf der Wieden|Freihaus-Theater auf der Wieden]] in [[Vienna]].