Deucalion was the God of Justice and, eventually, Righteousness.
Originally, His name was Dunamis, which means "The Justice that Was" in the language of the Aldar. Dunamis was contacted, through extensive prayer and meditation, by Tassad Barsalan, the newly-appointed secretary of the Church. Tassad learned that deposed god was unable to leave the plane upon which He was imprisoned without causing chaos throughout Creation, something Dunamis opposed. After much thought, Tassad decided to take Dunamis' place on this plane of Order, killing Tassad in the process. Upon Dunamis' arrival on this plane, Sarapis renamed him Deucalion, which means "The Justice that Is."
In the year 261 AF, Maran La'Saen, the Sultan of Shallam and the guildmaster of the Priests, sacrificed himself in an attempt to reawaken Him. Although unsuccessful, the Gods honored Maran's selfless act and his soul was joined with the remaining essence of Deucalion to became Pentharian, God of Righteousness and Valor.