The term Gallo-Roman describes the Romanized culture of Gaul under the rule of the Roman Empire. This was characterized by the Gaulish adoption or adaptation of Roman morals and way of life in a uniquely Gaulish context. The well-studied meld of cultures in Gaul gives historians a model against which to compare and contrast parallel developments of Romanization in other, less-studied Roman provinces.
Interpretatio romana offered Roman names for Gaulish deities such as the smith-god Gobannus, but of Celtic deities only the horse-patroness Epona penetrated Romanized cultures beyond the confines of Gaul.
The barbarian invasions beginning in the early fifth century forced upon Gallo-Roman culture fundamental changes in politics, in the economic underpinning, in military organization. The Gothic settlement of 418 offered a double loyalty, as Western Roman authority disintegrated at Rome. The plight of the highly Romanized governing class is examined by R.W. Mathisen, the struggles of bishop Hilary of Arles by M. Heinzelmann,