- Mar 2 George Alexander Macfarren, British composer and musicologist, born in London, England (d. 1887)
- Mar 4 Wijnand Nuijen, Dutch romantic and water color painter (Wrecked), born in Den Haag, Netherlands (d. 1839)
- Mar 7 Judocus Smits, Dutch Catholic newspaper pioneer/founder (The Time)
John Snow (1813-1858)
Mar 15 English epidemiologist who studied cholera and is considered the 'Father of modern epidemiology', born in York England
- Mar 18 Friedrich Hebbel, writer
David Livingstone (1813-1873)
Mar 19 Scottish explorer who was famously found by Henry Morton Stanley in Africa, born in Blantyre, South Lanarkshire, Scotland
- Mar 20 Matthias Keller, German hymn writer (O Farther un High), born in Ulm, Württemberg (d. 1875)
- Mar 21 James Jesse Strang, King of Mormons on Beaver Is, MI (1850-56)
- Mar 22 Gabriel René Paul, American Brigadier General (Union Army), born in St. Louis, Missouri (d. 1886)
- Mar 26 Thomas West Sherman, American Brevet Major General (Union Army), born in Newport, Rhode Island (d. 1879)
- Mar 27 Nathaniel Currier, American lithographer (Currier & Ives), born in Roxbury, Massachusetts (d. 1888)
- Mar 29 John Letcher, American lawyer and politician, U.S. House of Representatives from Virginia, born in Lexington, Virginia (d. 1884)