The Diocese of Mondoñedo-Ferrol (also known as "Dioecesis Mindoniensis-Ferrolensis") is one of the five districts in which the Roman Catholic church divides Galicia in North-western Spain. The bishop who has two Cathedrals (i.e.: from Latin "cathedra" meaning seat, so two "seats") one in Ferrol and the other in Mondoñedo has jurisdiction over the most northern parishes of Galicia; covering the parishes of the northern part of the Province of A Coruña and the Province of Lugo. The area had previously been home to Britonia, a settlement founded by expatriate Britons in the wake of the Anglo-Saxon invasion of Britain. Britonia was represented by the diocese referred to as Britonensis ecclesia (British church) in sources from the 6th and 7th centuries.
Some authorities have sought to fix the date of the foundation of this diocese (under its primitive name of Britonia) earlier than the second half of the 6th century, but the later date seems the more probable when we consider that, at the Second Council of Braga (572), Mailoc, Bishop of Britonia, was ranked lowest because of the more recent origin of his see. It seems to have been founded by the Suevian king, Theodomir, converted to Catholicism by St Martin of Dumio and to have included in its jurisdiction the Churches of the Britones (a territory coinciding with that of Mondoñedo) and some of those of the Asturias. In the beginning it was a suffragan of Lugo, until the Goths placed Lugo under the jurisdiction of Braga. After Mailoc no mention is found of the bishops of Britonia for a long time, doubtless because the great distance from Toledo made it impossible for them to assist at the councils. In 633 Metopius, Bishop of Britonia, assisted at the Fourth Council of Toledo, presided over by St Isidore of Seville. Sonna, his successor, was one of the bishops who signed at the Seventh Council of Toledo (646) and sent a representative to the Eighth Council of Toledo (16 December 653). When Britonia was invaded and destroyed by the Saracens, the bishop and priests took refuge in Asturias. In 899, during the reign of Alfonso III of Asturias, Theodesimus, Bishop of Britonia assisted with other prelates at the consecration of the church of Santiago de Compostela. It may also be noted that, in the repartition of the parishes, the church of San Pedro de Nova was assigned as the residence of the bishops of Britonia and Orense, when they should come to assist at the councils of Oviedo. By that time, however, the See of Britonia had been translated to the town of Mondumetum and the church of St. Martin of Dumio, or Mondoñedo. The diocese has since been most generally known by this name, although the episcopal residence has again changed. After the time of St. Martin it was transferred to Villamayor de Brea, from which it derived the name of Villabriensis, and afterwards to Ribadeo, but it was nevertheless known as Mindoniense, as a document of the year 1199 bears witness. At first, its patron was St. Martin of Tours, but St. Martin of Dumio was afterwards chosen patron.
The diocese of Valabria, corresponding to the diocese that had its seat at Villamayor de Brea, is included in the Catholic Church's list of titular sees.
Mailoc (Second Council of Braga, 572)
Metopius (Fourth Council of Toledo, 633)
Sonna (Seventh Council of Toledo, 646)
Susa (Eighth Council of Toledo, 653)
Bela (Third Council of Braga, 675)
Savaric I (866–77)
Rudesind I (877–907)
Savaric II (907–25/6)
Rudesind II (925/6–42)
Teodomiro ( –977)
Arias Peláez (977–84)
Armentario (984–1011)
Suario I (1015–22)
Nuño I (1025–27)
Adulfo (¿–?)
Albito (1040?)
Suario II (1058–71)
Saint Gonzalo (1071–1112)
Nuño Alfonso (1112–36)
Pelayo I (1136–1154)
Pedro I (1155–1167)
Joán Pérez (1170–1173)
Rabinato (1177–1199)
Pelayo de Cebeyra (Pelayo II) (1199–1218)
Martín Duniense (1219–1248)
Joán II de Sebastiáns (1248–1261)
Nuño II Pérez (1261–1286)
Álvaro Gómez (1286–1297)
Rodrigo Vázquez (1298–1318)
Gonzalo (1319–1326)
Joán III (1327–1329)
Álvaro Pérez de Biezma (1326-13431)
Vasco (1343–1346)
Alfonso Sánchez (1347–1366)
Francisco I (1367–1393)
Lope de Mendoza (1393–1399)
Álvaro de Isorna (1400-14151)
Gil Soutelo (1415–1425)
Gil Rodríguez de Muros (1429–1432)
Pedro Henríquez (1426–1445)
Pedro Arias Vaamonde (1446–1448)
Alfonso de Segura (1449–1455)
Alfonso Vázquez de Acuña (1455–1457, appointed Bishop of Jaén)
Fadrique de Guzmán (1462-1492)
Alonso Suárez de la Fuente del Sauce (1493–1495, appointed Bishop of Lugo)
Pedro de Munébrega (1498–1504)
Diego de Muros (bishop of Oviedo) (4 Apr 1505 Appointed - 1 Oct 1512 Appointed, Bishop of Oviedo
Diego Pérez Villamuriel (1 Oct 1512 Appointed - 1520 Died)
Juan Loaysa (8 Jun 1524 - 1525 Died)
Jerónimo Suárez Maldonado (10 Jul 1525 Appointed - 20 Mar 1532 Appointed, Bishop of Badajoz)
Pedro Pacheco de Villena (Ladrón de Guevara) (6 Sep 1532 Appointed - 11 Apr 1537 Appointed, Bishop of Ciudad Rodrigo)
Antonio Guevara Noroña, O.F.M. (11 Apr 1537 Appointed - 3 Apr 1545 Died)
Diego Soto Valera (27 Nov 1545 Appointed - 21 Aug 1549 Died)
Francisco de Santa María Benavides Velasco, O.S.H. (17 Jul 1550 Appointed - 21 Oct 1558 Appointed, Bishop of Segovia)
Pedro Maldonado (bishop), O.F.M. (23 Jan 1559 Appointed - 2 Jul 1566 Died)
Gonzalo de Solórzano (13 Jan 1567 Appointed - 18 Feb 1570 Appointed, Bishop of Oviedo)
Antonio Luján Luján, O.F.M. (20 Feb 1570 Appointed - 7 Oct 1570 Died)
Juan de Liermo Hermosa (4 Jun 1574 Appointed - 26 Jul 1582 Appointed, Archbishop of Santiago de Compostela)
Isidoro Caja de la Jara (20 Dec 1582 Appointed - 26 May 1593 Died)
Gonzalo Gutiérrez Montilla (16 Nov 1593 Appointed - 18 Sep 1598 Appointed, Bishop of Oviedo)
Diego González Samaniego (1 Feb 1599 Appointed - 22 Oct 1611 Died)
Alfonso Mesía de Tovar (18 Jun 1612 Appointed - 27 Jan 1616 Appointed, Bishop of Astorga)
Pedro Fernández Zorrilla (23 Mar 1616 Appointed - 23 Jul 1618 Appointed, Bishop of Badajoz)
Rafael Díaz de Cabrera, O.SS.T. (6 Aug 1618 Appointed - 30 Sep 1630 Died)
Francisco Villafañe (12 May 1631 Appointed - 5 Sep 1633 Appointed, Bishop of Osma)
Antonio Valdés Herrera (19 Dec 1633 Appointed - 23 Jun 1636 Appointed, Bishop of Oviedo)
Gonzalo Sánchez de Somoza Quiroga (21 Jun 1638 Appointed - 14 Aug 1644 Died)
Juan Juániz de Echalar (31 Jul 1645 Appointed - 16 Dec 1647 Appointed, Bishop of Calahorra y La Calzada)
Francisco Torres Grijalba, O.S.A. (13 Jan 1648 Appointed - 4 Sep 1672 Died)
Dionisio Pérez Escobosa (23 Apr 1663 - 9 Jul 1668 Appointed, Bishop of Zamora)
Luis Tello de Olivares (26 Nov 1668 - 16 May 1671 Died)
Sebastián de Arévalo y Torres, O.F.M. (16 May 1672 - 20 Apr 1682 Appointed, Bishop of Osma)
Gabriel Ramírez de Arellano, O.P. (25 May 1682 - 22 Oct 1689 Died)
Miguel Quijada, O. Cist. (27 Sep 1690 - 31 May 1698 Died)
Manuel Francisco Navarrete y Ladrón de Guevara (1 Jun 1699 - 18 May 1705 Appointed, Archbishop of Burgos)
Juan Antonio Muñoz Salcedo, O.S.H. (1705 Ordained Bishop - 5 May 1728 Died)
Antonio Alejandro Sarmiento Sotomayor, O.S.B. (21 Sep 1728 - 18 Oct 1751 Died)
Juan Manuel de Escobar y de la Carrera (24 Apr 1752 Appointed - 27 Jul 1752 Died)
Carlos Antonio Riomol Quiroga (17 Nov 1752 Appointed - 1 Mar 1761 Died)
José Francisco Losada Quiroga (23 Nov 1761 Appointed - 30 Jun 1779 Died)
Francisco Cuadrillero Mota (11 Dec 1780 Appointed - 23 Mar 1797 Died)
Andrés Aguiar Caamaño (18 Dec 1797 Appointed - 12 Nov 1815 Died)
Bartolomé Cienfuegos (22 Jul 1816 Appointed - 22 Jan 1827 Died)
Franciso López Borricón (25 Jun 1827 Appointed - 10 Dec 1839 Died)
Tomás Iglesias Bárcones (20 May 1850 Appointed - 28 Nov 1851 Appointed, Patriarch of West Indies)
Telmo Maceira (27 Sep 1852 Appointed - 28 Sep 1855 Appointed, Bishop of Tui)
Ponciano Arciniega (25 Sep 1857 Appointed - 3 Sep 1868 Died)
Francisco de Sales Crespo y Bautista (5 Jul 1875 Appointed - 18 Feb 1877 Died)
José Manuel Palacios y López (25 Jun 1877 Appointed - 2 Dec 1885 Died)
José María Cos y Macho (10 Jun 1886 Appointed - 14 Feb 1889 Appointed, Archbishop of Santiago de Cuba)
Manuel Fernández de Castro y Menéndez (30 Dec 1889 Appointed - 27 Jun 1905 Died)
Juan José Solís y Fernández (14 Dec 1905 Appointed - 24 Feb 1931 Died)
Benjamín de Arriba y Castro (1 May 1935 Appointed - 8 Aug 1944 Appointed, Bishop of Oviedo)
Fernando Quiroga y Palacios (25 Nov 1945 Appointed - 4 Jun 1949 Appointed, Archbishop of Santiago de Compostela)
Mariano Vega Mestre (5 Oct 1950 Appointed - 25 Apr 1957 Died)
Jacinto Argaya Goicoechea † (12 Sep 1957 Appointed - 18 Nov 1968 Appointed, Bishop of San Sebastián)
Miguel Angel Araújo Iglesias † (2 Jul 1970 Appointed - 20 May 1985 Resigned)
José Gea Escolano (15 May 1987 Appointed - 6 Jun 2005 Retired)
Manuel Sánchez Monge (6 Jun 2005 Appointed - 6 May 2015 Appointed, Bishop of Santander)
Luis Angel de las Heras Berzal (March 16, 2016 – Present)
Coordinates for both cathedrals:
St. Julian's Cathedral in Ferrol (Province of A Coruña) 43°28′N 8°15′W
Mondoñedo's Cathedral in Mondoñedo (Province of Lugo) 43°26′00.36″N 7°21′23.48″W
