Prester John (Laitin: Presbyter Johannes) is a leegendar Christian patriarch an king popular in European chronicles an tradeetion frae the 12t throu the 17t centuries. He wis said tae rule ower a Nestorian (Kirk o the East) Christian naition lost amid the Muslims an paugans o the Orient, in that the Patriarch o the Saunt Thomas Christians residit.

"Preste" as the Emperor o Ethiopie, enthroned on a map o East Africae in an atlas prepared bi the Portuguese for Queen Mary, 1558. (Breetish Librar)