Historical Context
The martyrdoms are placed in the early fourth century under the emperor Licinius (reigned 311–324), who ruled the eastern portion of the Roman Empire and renewed persecution of Christians. The Mystagogy Resource Center counts Macrobius and Gordian among eleven holy martyrs who suffered during Licinius's reign, dating their deaths to about 315.
Tomis, the place of their martyrdom, was a city of Scythia Minor on the Black Sea coast, corresponding to modern Constanța in Romania.