Births on April 12

José Gautier Benítez, Puerto Rican soldier and poet (d. 1880)

José Martín Antonio Gautier Benítez (April 12, 1848 – January 24, 1880) was a Puerto Rican poet of the Romantic Era.

15 May

1848 revolutions
Serfdom is abolished in the Habsburg Galicia, as a result of the 1848 revolutions. The rest of monarchy followed later in the year.
18 May

Frankfurt Parliament
Opening of the first German National Assembly (Nationalversammlung) in Frankfurt, Germany.
19 Jul

Seneca Falls Convention
Women's rights: A two-day Women's Rights Convention opens in Seneca Falls, New York.
29 Sep

Hungarian Revolution of 1848
Battle of Pákozd: Stalemate between Hungarian and Croatian forces at Pákozd; the first battle of the Hungarian Revolution of 1848.
1 Nov

Boston University
In Boston, Massachusetts, the first medical school for women, Boston Female Medical School (which later merged with the Boston University School of Medicine), opens.