He was a native of Thessalonica, born of noble parents. His wisdom and distinction in battle earned him rapid advancement in the service of the Empire: in time he was appointed commander of all the Roman forces in Thessaly, and Proconsul of Hellas. Despite these worldly honors, Demetrius put his Christian faith before all, and by his words and example brought many pagans to faith in Christ.
  When the Emperor Maximian, a persecutor of Christians, came to Thessalonica he appointed games and public sacrifices to celebrate his recent victory over the Scythians. Some jealous pagans used the visit to denounce Demetrius to the Emperor. Maximian had Demetrius cast into a fetid cell in the basement of some nearby baths. Maximian had brought with him a huge barbarian of tremendous strength named Lyaios, who fought many men in the arena and defeated them all, to the entertainment of the Emperor and the crowds. A young Christian named Nestor determined to show the people that the only true streng