Benjamin of Tudela, who traveled between 1159 and 1173, ventured as far as Basrah, Iraq. In his Travels, which were recorded in Hebrew, he mentions a powerful Eastern king called Kofar al-Turak whom some readers mistook for the Prester John of the Letter and Otto’s chronicle.
There exist other connections between Benjamin's narrative and the Letter, including a mention of Daniel's tomb while Benjamin of Tudela was in Susa, as well as a mention of the Lighthouse of Alexandria, which Benjamin describes as having a giant mirror similar to that described in Interpolation C of the
Letter (
Silverberg, 67).
Due perhaps to Benjamin’s narrative, some of the earliest copies of the Letter are in Hebrew, a feature of the legend that has also linked the figure of Prester John to the enigmatic tradition of the Sefer Eldad.
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Benjamin of Tudela… traveled in the East between the years of 1159-1173, the last being the date of his death. He wrote an account of his travels, and gives in it some information with regard to a mythical Jew king, who reigned in the utmost splendour over a realm inhabited by Jews alone, situate somewhere in the midst of a desert of vast extent.”
The third interpolation [of the Letter of Prester John] has Prester John declare that each year he goes into the desert to pay homage to the tomb of Daniel, a figure of some mystical significance with a considerable apocryphal literature of his own. In the late twelfth century the Jewish traveler Benjamin of Tudela had been shown a tomb said to be Danel’s while he was in the Persian city of Susa, and this, possibly, led to the linking of Daniel and Prester John.