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LANNON Family HistoryThis interesting surname is of Irish origin, and is an Anglicized form of two Irish septs. The surname may have originated from the Gaelic "O'Leannain", descendant of Leannan, a byname meaning "lover, paramour, concubine", or from "O'Lonain", descendant of Lonan, a personal name from a diminutive of "lon", blackbird. Traditionally, Irish family names are taken from the heads of tribes or from some illustrious warrior, and are usually prefixed by "O", grandson, male descendant of, or "M(a)c", son of.
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