Council of Orange
A provincial synod, the first, held in the year 441 at Orange in Southern France which issued thirty canons that have caused considerable controversy.
To these Gratian (1140) and others added unauthentic ordinances.
The Second Council of Orange (529) was the first in Gaul to publish a decision in matters of faith.
Its deliberations were against the errors of the Semi-Pelagians concerning original sin, grace, and predestination.
The acts of this council, approved by Pope Boniface II, were used by the Council of Trent in condemning Luther.
New Catholic Dictionary