In regno Tarsae sunt tres prouinciae, quarum dominatores se reges faciunt appellari. Homines illius patriae nominant Iogour. Semper idola coluerunt, et adhuc colunt omnes, praeter decem cognationes illorum regum, qui per demonstrationem stellae uenerunt adorare natiuitatem in Bethlehem Judae. Et adhuc multi magni et nobiles inueniunt inter Tartaros de cognatione illa, qui tenent firmiter fidem Christi. (In the kingdom of Tarsis there are three provinces, whose rulers have called themselves kings. the men of that country are called Uighours. They always worshipped idols, and they all still worship them, except ten families of those Kings who through the appearance of the Star came to adore the Nativity in Bethlehem of Judah. And there are still many of the great and noble of that family found among the Tartars who hold firmly to the faith of Christ.) De Tartaris Liber,, 1307 AD, also called La flor des estoires de la terre d'Orient, by Hayton of Corycus in Novus orbis regionum ac insularum veteribus incognitarum, edited by Simon Grynaeus và Johannes Huttichius, Basel, 1532, caput ii, De Regno Tarsae, p.420. English translation.
Hayton of Corycus, La flor des estoires de la terre d'Orient (1307), quoted in Ugo Monneret de Villard, Le Leggende orientali sui Magi evangelici, Citta del Vaticano, Biblioteca apostolica vaticana, 1952, p.162. Also found in De Tartaris Liber, caput XXX, De Cobila Can quinto Imperatore Tartarorum , on page 445: "Nam ipse [Guiboga] fuerat de progenie trium regum, qui uenerunt natiuitatem domini adorare" ("For he was a descendant of the Three Kings who came to the Nativity to adore the Lord").
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In regno Tarsae sunt tres prouinciae, quarum dominatores se reges faciunt appellari. Homines illius patriae nominant Iogour. Semper idola coluerunt, et adhuc colunt omnes, praeter decem cognationes illorum regum, qui per demonstrationem stellae uenerunt adorare natiuitatem in Bethlehem Judae. Et adhuc multi magni et nobiles inueniunt inter Tartaros de cognatione illa, qui tenent firmiter fidem Christi. (In the kingdom of Tarsis there are three provinces, whose rulers have called themselves kings. the men of that country are called Uighours. They always worshipped idols, and they all still worship them, except ten families of those Kings who through the appearance of the Star came to adore the Nativity in Bethlehem of Judah. And there are still many of the great and noble of that family found among the Tartars who hold firmly to the faith of Christ.) De Tartaris Liber,, 1307 AD, also called La flor des estoires de la terre d'Orient, by Hayton of Corycus in Novus orbis regionum ac insularum veteribus incognitarum, edited by Simon Grynaeus và Johannes Huttichius, Basel, 1532, caput ii, De Regno Tarsae, p.420. English translation.