Births on March 4

Elme Marie Caro, French philosopher and academic (d. 1887)

Elme Marie Caro (4 March 1826, Poitiers, Vienne – 13 July 1887, Paris) was a French philosopher.

1 Apr

Internal combustion engine
Samuel Morey received a patent for a compressionless "Gas or Vapor Engine".
21 Jun

Battle of Vergas
Maniots defeat Egyptians under Ibrahim Pasha in the Battle of Vergas.
11 Sep

William Morgan (anti-Mason)
Captain William Morgan, an ex-freemason is arrested in Batavia, New York for debt after declaring that he would publish The Mysteries of Free Masonry, a book against Freemasonry. This sets into motion the events that lead to his mysterious disappearance.
16 Dec

Fredonian Rebellion
Benjamin W. Edwards rides into Mexican-controlled Nacogdoches, Texas, and declares himself ruler of the Republic of Fredonia.
21 Dec

Fredonian Rebellion
American settlers in Nacogdoches, Mexican Texas, declare their independence, starting the Fredonian Rebellion.