He was born in Antioch , in modern - day Turkey , and beheaded in 304 at Salona .
Saint Domnius was martyred with seven other Christians in the persecutions of the Emperor Diocletian .
Saint Domnius was born in Antioch , in modern - day Turkey , and beheaded in 304 at Salona .
Saint Domnius was martyred with seven other Christians in the persecutions of the Emperor Diocletian .