According to his legend, Sebastian was born at Narbonne, Gaul. He became a soldier in the Roman army at Rome in about 283, and encouraged Marcellian and Marcus, under sentence of death, to remain firm in their faith. Sebastian made numerous converts: among them were the master of the rolls, Nicostratus, who was in charge of prisoners and his wife, Zoe, a deaf mute whom he cured; the jailer Claudius; Chromatius, Prefect of Rome, whom he cured of gout; and Chromatius' son, Tiburtius. Chromatius set the prisoners free, freed his slaves, and resigned as prefect.
Sebastian was named captain in the praetorian guards by Emperor Diocletian, as did Emperor Maximian when Diocletian went to the East. Neither knew that Sebastian was a Christian. When it was discovered during Maximian's persecution of the Christians that Sebastian was indeed a Christian, he was ordered executed. He was shot with arrows and left for dead, but when the widow of St. Castulus (St. Irene of Rome) went to recover his body, she found he was still alive and nursed him back to health. Soon after, Sebastian intercepted the Emperor, denounced him for his cruelty to Christians, and was beaten to death on the Emperor's orders.
Saint Sebastian was venerated at Milan as early as the time of St. Ambrose and was buried on the Appian Way.
Dear Commander at the Roman Emperor's court, you chose to be a soldier of Christ and dared to spread faith in the King of Kings---for which you were condemned to die. Your body, however, proved athletically strong and the executing arrows extremely weak. So another means to kill you was chosen and you gave your life to the Lord. May athletes be always as strong in their faith as their Patron Saint so clearly has been.