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Irish Jewish Genealogical Database >== Celts one of the Ten Lost Tribes of Israel?There is a theory that the Irish, or that Insular Celts as a whole, are descended from the Ten Lost Tribes. Proponents of this theory state that there is evidence that the prophet Jeremiah came to Ireland with Princess Tea Tephi , a member of the Israelite royal family. Proponents of this theory point to various p...