Births
March 15, 1821
Jan or Johann Josef Loschmidt, who referred to himself mostly as Josef Loschmidt (omitting his first name), was a notable Austrian scientist who performed groundbreaking work in chemistry, physics (thermodynamics, optics, electrodynamics), and crystal forms.

November 11, 1821
Fyodor Mikhaylovich Dostoyevsky was a Russian writer of novels, short stories and essays. He is best known for his novels
Crime and Punishment,
The Idiot and
The Brothers Karamazov.

December 4, 1821
Ernst Wilhelm Leberecht Tempel, normally known as Wilhelm Tempel, was a German astronomer who worked in Marseille until the outbreak of the Franco-Prussian War in 1870, then later moved to Italy.

December 10, 1821
Nikolay Alexeyevich Nekrasov was a Russian poet, writer, critic and publisher, whose deeply compassionate poems about peasant Russia won him Fyodor Dostoyevsky's admiration and made him the hero of liberal and radical circles of Russian intelligentsia, as represented by Vissarion Belinsky and Nikolay Chernyshevsky.