- Mar 1 Robert Christie Buchanan, American Brevet Major General (Union Army), born in Baltimore, Maryland (d. 1878)
- Mar 7 Christian Heinrich Hohmann, German composer, born in Niederwerrn (d. 1861)
- Mar 11 Marsena Rudolph Patrick, American Brevet Major General (Union Army), born in Hounsfield, New York (d. 1888)
- Mar 11 Urbain Jean Joseph le Verrier, French astronomer (made calculations that proved existence of Neptune), born in Saint-Lô, France (d. 1877)
- Mar 13 Camille Marie Stamaty, French pianist, composer, and teacher of Louis Moreau Gottschalk and Camille Saint-Saëns, born in Département Rome, French Empire (now Rome, Italy) (d. 1870)
- Mar 15 Robert Allen, American Brevet Major General (Union Army), born in West Point, Ohio (d. 1886)
- Mar 20 George Caleb Bingham, American politician and painter (Country Election), born in Augusta, County, Virginia (d. 1879)
- Mar 20 Napoleon II, son of Napoleon Bonaparte, Prince Imperial and King of Rome (never ruled France), born in Tuileries Palace, Paris, France (d. 1832)
- Mar 21 Nathaniel Woodard, English educationalist (d. 1891)
- Mar 23 (Carl Gottfried) Wilhelm Taubert, German pianist, conductor, and composer, born in Berlin, Germany (d. 1891)
- Mar 30 Angelo Catelani, Italian composer, conductor, and musicologist, born in Guastalla, Kingdom of Italy (d. 1866)
Robert Bunsen (1811-1899)
Mar 30 German chemist who invented the Bunsen Burner, born in Göttingen, Westphalia, Rhine Confederation
