Tethras IV of some kingdom

King Tethras IV (often referred to as "The Mad King Tethras") was king of the [something land] in [insert year(s)]. Most well known for his final act of revenge against the Medici armies, when he obliterated his castle and the surrounding land for nearly a mile. He disappeared until his recent appearance at the location of his old stronghold near the Heartspine Mountains.

Article a work in progress, obviously.