She was living in Septimania, married and had a daughter, Adia, when the area was attacked by Theudebert I in 533.
She left her husband but brought her daughter with her to court, where Deuteria and Theudebert became lovers.
At this point, her husband was still alive and Theudebert was engaged to Wisigard, a Lombard princess.
According to Gregory of Tours, in 536 Deuteria had her daughter drowned in fear of her becoming a rival over Theudebert.
After the murder, the aristocracy had Theudebert expel Deuteria from court and forced him to marry Wisigarde.