- Walter F. Elrod
- Adolf Heinrich Eckermann
Death - 21 March 1850 (53 year anniversary) - Ratchau near Lubeck, Germany - Moses Vose
- Johannes Prætorius
- Edward J. Boomer
Birth - 21 March 1821 (82 year anniversary) - Genesee Co., New York (now called Wyoming County) - John Newcome
- Rebecca Round
Birth - 21 March 1742 (161 year anniversary) - Rehobeth, Bristol, MA - John Plumb
Death - 21 March 1728 (175 year anniversary) - Milford Twp, New Haven Co. CT - John Martin
Death - 21 March 1713 (190 year anniversary) - Swansea, Bristol Co., MA - James Lyon
- Samuel Smith
Death - 21 March 1698 (205 year anniversary) - Fairfield, Fairfield, CT - Gardruth Uckermann
- Elizabeth Ingraham
Birth - 21 March 1628 (275 year anniversary) - Essex Co., England - Patrick Lyon
Death - 21 March 1459 (444 year anniversary) - At Belhelvies, Aberdineshire, Scotland - Henry Iv King England
Death - 21 March 1413 (490 year anniversary) - , Westminster, Middlesex, England - Joan Hussey
Death - 21 March 1411 (492 year anniversary) - Farley, HUNGERFORD, Somersetshire, England - Elizabeth (Isabel) Verdon
Birth - 21 March 1317 (586 year anniversary) - , Amesbury, Wiltshire, England - Jean Count de Brienne
Death - 21 March 1237 (666 year anniversary) - , , Constantinople, Turkey - Robert Prince Of France
Death - 21 March 1076 (827 year anniversary) - , Fleury-Sur-Ouche, France - COUNTESS OF GASTINOIS] Ermengarde Countess Of Anjou
- Regelindis von Polen
- Ælle von Northumbria
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