- John Plumb
Death - 21 March 1728 (7 year anniversary) - Milford Twp, New Haven Co. CT - John Martin
Death - 21 March 1713 (22 year anniversary) - Swansea, Bristol Co., MA - James Lyon
- Samuel Smith
Death - 21 March 1698 (37 year anniversary) - Fairfield, Fairfield, CT - Gardruth Uckermann
- Elizabeth Ingraham
Birth - 21 March 1628 (107 year anniversary) - Essex Co., England - Patrick Lyon
Death - 21 March 1459 (276 year anniversary) - At Belhelvies, Aberdineshire, Scotland - Henry Iv King England
Death - 21 March 1413 (322 year anniversary) - , Westminster, Middlesex, England - Joan Hussey
Death - 21 March 1411 (324 year anniversary) - Farley, HUNGERFORD, Somersetshire, England - Elizabeth (Isabel) Verdon
Birth - 21 March 1317 (418 year anniversary) - , Amesbury, Wiltshire, England - Jean Count de Brienne
Death - 21 March 1237 (498 year anniversary) - , , Constantinople, Turkey - Robert Prince Of France
Death - 21 March 1076 (659 year anniversary) - , Fleury-Sur-Ouche, France - COUNTESS OF GASTINOIS] Ermengarde Countess Of Anjou
- Regelindis von Polen
- Ælle von Northumbria
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