1691

Events

• March 5 - French troops under Marshal Louis-Francois de Boufflers besiege the Spanish-held town of Mons
• March 29 - Siege of Mons ends to the city’s surrender
• Treaty of Limerick penalizes public worship of catholics and Presbyterians
• Change of emperor of the Ottoman Empire from Suleiman II (1687-1691) to Ahmed II (1691-1695).
• Michel Rolle invents Rolle's theorem, an essential theorem of mathematics.

Births

• Peder Tordenskjold, Norwegian Admiral and naval hero (d. 1720)

Deaths

• Suleiman II, Sultan, Ottoman Empire (born 1642)
• January 13 - George Fox, founder of the Society of Friends (born 1624)
• February 1 - Pope Alexander VIII (born 1610)
• December 30 - Robert Boyle, chemist (born 1627)