- Mar 2 Henry Beebee Carrington, American lawyer, professor, prolific author, and Brigadier General (Union Army), born in Wallingford, Connecticut (d. 1912)
- Mar 2 Konstantin Ushinsky, Russian educationalist (credited as the founder of scientific pedagogy in Russia), born in Tula, Russia (d. 1870)
- Mar 2 [Friedrich] Bedřich Smetana, Czech composer (The Bartered Bride; Má Vlast; Moldau), born in Litomyšl, Bohemia (d. 1884)
- Mar 5 Elisha Harris, American physician (founded American Public Health Association, sanitary reform), born in Westminster, Vermont (d. 1884)
- Mar 5 James Merritt Ives, American lithographer and businessman (Currier and Ives), born in NYC, New York (d. 1895)
Leland Stanford (1824-1893)
Mar 9 American business tycoon (Southern Pacific Railroad), 8th Governor of California and founder of Stanford University, born in Watervliet, New York
- Mar 10 Thomas James Churchill, Major General (Confederate Army), (d. 1905)
- Mar 12 Gustav Kirchhoff, German physicist (spectroscopy, coined "black body" radiation), born in Königsberg, Kingdom of Prussia (d. 1887)
- Mar 15 Branko Radicevic, Serbian poet (1st Serbian Uprising), born in Slavonski Brod, Austrian Empire (d. 1853)
- Mar 15 Jules Chevalier, French Roman Catholic priest (Missionaries of the Sacred Heart, Daughters of Our Lady of the Sacred Heart), born in Richelieu, Touraine, France (d. 1907)
- Mar 22 William Henry Chase Whiting, American Major General (Confederate Army), born in Biloxi, Mississippi (d. 1865)
- Mar 25 Clinton L. Merriam, American politician (Rep-R-NY) (d. 1900)
- Mar 29 Ludwig Büchner, German philosopher and physician, born in Darmstadt, Germany (d. 1899)
- Mar 30 Innis Newton Palmer, American Brevet Major General (Union Army), born in Buffalo, New York (d. 1900)