The International Prester John Project: How A Global Legend Was Created Across Six Centuries

Decameron

Giovanni Boccaccio includes a small Prester John detail in the ninth novel of the eighth day in which Prester John's queen is, according to the anonymous 1620 English translation, described, equipped with "a horne in the midst of her posteriores, albeit not visible to euery eye" (cf. Brewer, p. 282).  

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