Constantine was born in the early 270s or 280s in Naissus, Moesia (Serbia). His mother was the daughter of an innkeeper. He was brought up at her home, Drepanum, until his father, Constantius, became emperor in 292. The young Constantine was sent to the court of Diocletian, told he was to be educated, but was really held as a hostage. For 14 years he was held against his will, threatened by Diocletian, who was jealous of his physique and military expertise. Finally, late one night, Constantine was given permission to go, though Diocletian intended to revoke his pardon in the morning. But by then it was too late: Constantine had escaped, and was on his way to meet his father. Though the young man was able to join his father on a few expeditions, Constantius Chlorus died soon after he was reunited with his son, naming Constantine as his successor.