Teia Tephi, {Legendary, Annals of the Four Masters} - Documentation

Summation of the history of the legendary connection of Teia Tephi to Ireland is here —

https://en.m.wikipedia.org/wiki/List_of_legendary_kings_of_Britain#....

An excerpt:

The Tea Tephi-British monarchy link is also found in J. H. Allen's Judah's Sceptre and Joseph's Birthright (1902, p. 251). A central tenet of British Israelism is that the British monarchy is from the Davidic line and the legend of Tea Tephi from the 19th century attempted to legitimise this claim. Tea Tephi, however, has never been traced to an extant Irish source before the 19th century and critics assert she was purely a British Israelite invention.[25] A collection of alleged bardic traditions and Irish manuscripts which detail Tea Tephi were published by J. A. Goodchild in 1897 as The Book of Tephi, the work is, however, considered pseudo-historical or a forgery.