Births on December 23

Wilhelm Bauer, German engineer (d. 1875)

Wilhelm Bauer (23 December 1822 – 20 June 1875) was a German inventor and engineer who built several hand-powered submarines.

15 Jan

Demetrios Ypsilantis
Greek War of Independence: Demetrios Ypsilantis is elected president of the legislative assembly.
14 Jun

Difference engine
Charles Babbage proposes a difference engine in a paper to the Royal Astronomical Society entitled "Note on the application of machinery to the computation of astronomical and mathematical tables".
2 Jul

Denmark Vesey
Thirty-five slaves are hanged in South Carolina, including Denmark Vesey, after being accused of organizing a slave rebellion.
26 Jul

Guayaquil Conference
José de San Martín arrives in Guayaquil, Ecuador, to meet with Simón Bolívar.
27 Sep

Rosetta Stone
Jean-François Champollion announces that he has deciphered the Rosetta Stone.