- Mar 3 Gyula Andrássy Sr, Prime Minister of Hungary (1867-71), born in Kassa, Austrian Empire (d. 1890)
- Mar 12 William Flank Perry, Brigadier General (Confederate Army), (d. 1901)
- Mar 14 Roswell S. Ripley, Brigadier General (Confederate Army), born in Worthington, Ohio (d. 1887)
- Mar 14 Théodore de Banville, French writer, born in Moulins, France (d. 1891)
- Mar 16 William Henry Monk, English composer and organist (Eventide), born in London, England (d. 1889)
- Mar 19 Cornelis A van Sypesteyn, Dutch governor of Surinam (1873-82)
- Mar 19 Princess Adelgunde of Bavaria d. 1914
- Mar 20 John Echols, Brigadier General (Confederate Army), (d. 1896)
- Mar 20 Ned Buntline, American publisher (d. 1886)
- Mar 23 Schuyler Colfax, (R) 17th VP (1869-73)
- Mar 25 William T. Thompson American Martin, Major General (Confederate Army), born in Glasgow, Kentucky (d. 1910)
- Mar 27 Samuel Kosciusko Zook, American Brevet Major General (Union Army), born in Tredyffrin Township, Pennsylvania (d. 1863)
- Mar 30 Joseph Farmer Knipe, American Brigadier General (Union Army), born in Mount Joy, Pennsylvania (d. 1901)