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Mad Pelagius is a Breton holiday celebrated on the 2nd of Sun's Dawn. The Mad Pelagius festival is held in mock honor of the most eccentric emperor of the Septim Dynasty, Pelagius Septim III. Pelagius was a Prince of Wayrest before he became the King of Solitude, and later the Emperor of Tamriel. The Bretons like to boast that it was his time in High Rock that drove him mad.