Visio Tnugdali
The Visio Tnugdali ("Vision of Tnugdalus") is a 12th-century religious text reporting the otherworldly vision of the Irish knight Tnugdalus, later also called "Tundalus", "Tondolus" or in English translations, "Tundale", all deriving from the original Middle Irish Tnúdgal meaning "desire-valour" or "fierce valour". It was "one of the most popular and elaborate texts in the medieval genre of visionary infernal literature" and had been translated from the original Latin forty-three times into fifteen languages by the 15th century, including Icelandic and Belarusian.