- Mar 2 Alexander H. Bullock, 26th Governor of Massachusetts (d. 1882)
James Donnelly (1816-1880)
Mar 7 Irish-Canadian patriarch of the Donnelly family (Black Donnelly massacre), born in Ireland
- Mar 12 David Stuart, American politician, Brigadier General (Union Army), born in Brooklyn, New York (d. 1868)
- Mar 14 Montgomery Dent Corse, American Brigadier General (Confederate Army), born in Alexandria, Virginia (d. 1895)
- Mar 19 Johannes Verhulst, Dutch composer and conductor, born in The Hague, Netherlands (d. 1891)
- Mar 27 George Elvey, British organist and composer, born in Canterbury, England (d. 1893)
- Mar 29 James Gallant Spears, American Brigadier General (Union Army), born in Bledsoe County, Tennessee (d. 1869)
- Mar 29 Tsultrim Gyatso, 10th Dalai Lama, born in Chamdo (d. 1837)