The text refers to Canon 2 of the Second Council of Braga in AD 572, see . For the "edict of the ancient Fathers" mentioned in the end see e.g. Canon 9 of the Council of Chalcedon in AD 451.
In this canon we can observe an already quite elaborate terminology concerning the ecclesiastical administration. The main administrative division is the province (provincia), which is ruled by the metropolitan bishop and which consists of dioceses (diocesis) presided over by bishops. Dioceses consist of parish churches (parrochiae), and parrochia can mean either the rural region centred on the church, and remaining in the jurisdiction of the parish presbyter, or the church itself, here also called a basilica. For the development of the terminology, and its relationship with development of the ecclesiastical territorial administration and the emergence of the parish network see Ripoll, Velázquez 1999: 111-121.