Occidental Illyricum comprehended Pannonia prima and secunda, Savia, Dalmatia, Noricum mediterraneum, and Noricum ripense; and its Metropolis was Sirmium, till Attila destroyed this city. Afterwards Laureacum became the Metropolis of Noricum and both Pannonias, and Salona the Metropolis of Dalmatia. Now [[5]] the Bishops of Laureacum and Salona received the Pallium from the Pope: and Zosimus, in his decretal Epistle to Hesychius Bishop of Salona, directed him to denounce the Apostolic decrees as well to the Bishops of his own, as to those of the neighbouring Provinces. The subjection of these Provinces to the See of Rome seems to have begun in Anemius, who was ordained Bishop of Sirmium by Ambrose Bishop of Millain, and who in the Council of Aquileia under Pope Damasus, A.C. 381, declared his sentence in these words: Caput Illyrici non nisi civitas Sirmiensis: Ego igitur illius civitatis Episcopus sum. Eum qui non confitetur filium Dei æternum, & coeternum patri, qui est sempiternus, anathema dico. The next year Anemius and Ambrose, with Valerian Bishop of Aquileia, Acholias Bishop of Thessalonica, and many others, went to the Council of Rome, which met for overruling the Greek Church by majority of votes, and exalting the authority of the Apostolic See, as was attempted before in the Council of Sardica.
Aquileia was the second city of the Western Empire, and by some called the second Rome. It was the Metropolis of Istria, Forum Julium, and Venetia; and its subjection to the See of Rome is manifest by the decretal Epistle of Leo I. directed to Nicetas Bishop of this city; for the Pope begins his Epistle thus: Regressus ad nos filius meus Adeodatus Diaconus Sedis nostræ, dilectionem tuam poposcisse memorat, ut de his à nobis authoritatem Apostolicæ Sedis acciperes, quæ quidem magnam difficultatem dijudicationis videntur afferre. Then he sets down an answer to the questions proposed by Nicetas, and concludes thus: Hanc autem Epistolam nostram, quam ad consultationem tuæ fraternitatis emisimus, ad omnes fratres & comprovinciales tuos Episcopos facies pervenire, ut in omnium observantia, data profit authoritas. Data 1-2 Kal. Apr. Majorano Aug. Cos. A.C. 458. Gregory the great A.C. 591, [[6]] cited Severus Bishop of Aquileia to appear before him in judgment in a Council at Rome.
The Bishops of Aquileia and Millain created one another, and therefore were of equal authority, and alike subject to the See of Rome. Pope Pelagius about the year 557, testified this in the following words: [[7]] Mos antiquus fuit, saith he, ut quia pro longinquitate vel difficultate itineris, ab Apostolico illis onerosum fuerit ordinari, ipsi se invicem Mediolanensis & Aquileiensis ordinare Episcopos debuissent. These words imply that the ordination of these two Bishops belonged to the See of Rome. When Laurentius Bishop of Millain had excommunicated Magnus, one of his Presbyters, and was dead, [[8]] Gregory the great absolved Magnus, and sent the Pallium to the new elected Bishop Constantius; whom the next year [[9]] he reprehended of partiality in judging Fortunatus, and commanded him to send Fortunatus to Rome to be judged there: four years after [[10]] he appointed the Bishops of Millain and Ravenna to hear the cause of one Maximus; and two years after, viz. A.C. 601, when Constantius was dead, and the people of Millain had elected Deusdedit his successor, and the Lombards had elected another, [[11]] Gregory wrote to the Notary, Clergy, and People of Millain, that by the authority of his Letters Deusdedit should be ordained, and that he whom the Lombards had ordained was an unworthy successor of Ambrose: whence I gather, that the Church of Millain had continued in this state of subordination to the See of Rome ever since the days of Ambrose; for Ambrose himself acknowledged the authority of that See. Ecclesia Romana, [[12]] saith he, hanc consuetudinem non habet, cujus typum in omnibus sequimur, & formam. And a little after: In omnibus cupio sequi Ecclesiam Romanam. And in his Commentary upon 1 Tim. iii. Cum totus mundus Dei sit, tamen domus ejus Ecclesia dicitur, cujus hodie rector est Damasus. In his Oration on the death of his brother Satyrus, he relates how his brother coming to a certain city of Sardinia, advocavit Episcopum loci, percontatusque est ex eo utrum cum Episcopis Catholicis hoc est cum Romana Ecclesia conveniret? And in conjunction with the Synod of Aquileia A.C. 381, in a synodical Epistle to the Emperor Gratian, he saith: Totius orbis Romani caput Romanam Ecclesiam, atque illam sacrosanctam Apostolorum fidem, ne turbari sineret, obsecranda fuit clementia vestra; inde enim in omnes venerandæ communionis jura dimanant. The Churches therefore of Aquileia and Millain were subject to the See of Rome from the days of the Emperor Gratian. Auxentius the predecessor of Ambrose was not subject to the see of Rome, and consequently the subjection of the Church of Millain began in Ambrose. This Diocese of Millain contained Liguria with Insubria, the Alpes Cottiæ and Rhætia; and was divided from the Diocese of Aquileia by the river Addua. In the year 844, the Bishop of Millain broke off from the See of Rome, and continued in this separation about 200 years, as is thus related by [[13]] Sigonius: Eodem anno Angilbertus Mediolanensis Archiepiscopus ab Ecclesia Romana parum comperta de causa descivit, tantumque exemplo in posterum valuit, ut non nisi post ducentos annos Ecclesia Mediolanensis ad Romanæ obedientiam auctoritatemque redierit.
The Bishop of Ravenna, the Metropolis of Flaminia and Æmilia, was also subject to the Pope: for Zosimus, A.C. 417, excommunicated some of the Presbyters of that Church, and wrote a commonitory Epistle about them to the Clergy of that Church as a branch of the Roman Church: In sua, saith he, hoc est, in Ecclesia nostra Romana. When those of Ravenna, having elected a new Bishop, gave notice thereof to Pope Sixtus, the Pope set him aside, and [[14]] ordained Peter Chrysologus in his room. Chrysologus in his Epistle to Eutyches, extant in the Acts of the Council of Chalcedon, wrote thus: Nos pro studio pacis & fidei, extra consensum Romanæ civitatis Episcopi, causas fidei audire non possumus. Pope Leo I. being consulted by Leo Bishop of Ravenna about some questions, answered him by a decretal Epistle A.C. 451. And Pope Gregory the great, [[15]] reprehending John Bishop of Ravenna about the use of the Pallium, tells him of a Precept of one of his Predecessors, Pope John, commanding that all the Privileges formerly granted to the Bishop and Church of Ravenna should be kept: to this John returned a submissive answer; and after his death Pope Gregory ordered a visitation of the Church of Ravenna, confirmed the privileges heretofore granted them, and sent his Pallium, as of antient custom, to their new Bishop Marinian. Yet this Church revolted sometimes from the Church of Rome, but returned again to its obedience.
The rest of Italy, with the Islands adjacent, containing the suburbicarian regions, or ten Provinces under the temporal Vicar of Rome, viz. 1Campania, 2Tuscia and Umbria, 3Picenum suburbicarium, 4Sicily, 5Apulia and Calabria, 6Brutii and Lucania, 7Samnium, 8Sardinia, 9Corsica, and 10Valeria, constituted the proper Province of the Bishop of Rome. For the Council of Nice in their fifth Canon ordained that Councils should be held every spring and autumn in every Province; and according to this Canon, the Bishops of this Province met at Rome every half year. In this sense Pope Leo I. applied this Canon to Rome, in a decretal Epistle to the Bishops of Sicily, written Alippio & Ardabure Coss. A.C. 447. Quia saluberrime, saith he, à sanctis patribus constitutum est, binos in annis singulis Episcoporum debere esse conventus, terni semper ex vobis ad diem tertium Kalendarum Octobrium Romam æterno concilio sociandi occurrant. Et indissimulanter à vobis hæc consuetudo servetur, quoniam adjuvante Dei gratiâ, faciliùs poterit provideri, ut in Ecclesiis Christi nulla scandala, nulli nascantur errores; cum coram Apostolo Petro semper in communione tractatum fuerit, ut omnia Canonum Decreta apud omnes Domini sacerdotes inviolata permaneant. The Province of Rome therefore comprehended Sicily, with so much of Italy and the neighbouring Islands as sent Bishops to the annual Councils of Rome; but extended not into the Provinces of Ravenna, Aquileia, Millain, Arles, &c. those Provinces having Councils of their own. The Bishops in every Province of the Roman Empire were convened in Council by the Metropolitan or Bishop of the head city of the Province, and this Bishop presided in that Council: but the Bishop of Rome did not only preside in his own Council of the Bishops of the suburbicarian regions, but also gave Orders to the Metropolitans of all the other Provinces in the Western Empire, as their universal governor; as may be further perceived by the following instances.
Pope Zosimus A.C. 417, cited Proculus Bishop of Marseilles to appear before a Council at Rome for illegitimate Ordinations; and condemned him, as he mentions in several of his Epistles. Pope Boniface I. A.C. 419, upon a complaint of the Clergy of Valentia against Maximus a Bishop, summoned the Bishops of all Gallia and the seven Provinces to convene in a Council against him; and saith in his Epistle, that his Predecessors had done the like. Pope Leo I. called a general Council of all the Provinces of Spain to meet in Gallæcia against the Manichees and Priscillianists, as he says in his decretal Epistle to Turribius a Spanish Bishop. And in one of his decretal Epistles to Nicetas Bishop of Aquileia, he commands him to call a Council of the Bishops of that Province against the Pelagians, which might ratify all the Synodal Decrees which had been already ratified by the See of Rome against this heresy. And in his decretal Epistle to Anastasius Bishop of Thessalonica, he ordained that Bishop should hold two Provincial Councils every year, and refer the harder causes to the See of Rome: and if upon any extraordinary occasion it should be necessary to call a Council, he should not be troublesom to the Bishops under him, but content himself with two Bishops out of every Province, and not detain them above fifteen days. In the same Epistle he describes the form of Church-Government then set up, to consist in a subordination of all the Churches to the See of Rome: De qua forma, saith he, Episcoporum quoque est orta distinctio, & magna dispositione provisum est ne omnes sibi omnia vindicarent, sed essent in singulis Provinciis singuli quorum inter fratres haberetur prima sententia, & rursus quidam in majoribus urbibus constituti sollicitudinem sumerent ampliorem, per quos ad unam Petri Sedem universalis Ecclesiæ cura conflueret, & nihil usque à suo capite dissideret. Qui ergo scit se quibusdam esse præpositum, non moleste ferat aliquem sibi esse præpositum; sed obedientiam quam exigit etiam ipse dependat; et sicut non vult gravis oneris sarcinam ferre, ita non audeat aliis importabile pondus imponere. These words sufficiently shew the monarchical form of government then set up in the Churches of the Western Empire under the Bishop of Rome, by means of the imperial Decree of Gratian, and the appeals and decretal Epistles grounded thereupon.
The same Pope Leo, having in a Council at Rome passed sentence upon Hilary Bishop of Arles, for what he had done by a Provincial Council in Gallia, took occasion from thence to procure the following Edict from the Western Emperor Valentinian III. for the more absolute establishing the authority of his See over all the Churches of the Western Empire.
Impp. Theodosius & Valentinianus AA. Aetio Viro illustri, Comiti & Magistro utriusque militiæ & Patricio.
Certum est & nobis & imperio nostro unicum esse præsidium in supernæ Divinitatis favore, ad quem promerendum præcipue Christiana fides & veneranda nobis religio suffragatur. Cum igitur Sedis Apostolicæ Primatum sancti Petri meritum, qui princeps est Episcopalis coronæ & Romanæ dignitas civitatis, sacræ etiam Synodi firmavit auctoritas: ne quid præter auctoritatem Sedis istius illicitum præsumptio attemperare nitatur: tunc enim demum Ecclesiarum pax ubique servabitur, si Rectorem suum agnoscat Universitas. Hæc cum hactenus inviolabiliter suerint custodita, Hilarius Arelatensis, sicut venerabilis viri Leonis Romani Papæ fideli relatione comperimus, contumaci ausu illicita quædam præsumenda tentavit, & ideo Transalpinas Ecclesias abominabilis tumultus invasit, quod recens maximè testatur exemplum. Hilarius enim qui Episcopus Arelatensis vocatur, Ecclesiæ Romanæ urbis inconsulto Pontifice indebitas sibi ordinationes Episcoporum solâ temeritate usurpans invasit. Nam alios incompetenter removit; indecenter alios, invitis & repugnantibus civibus, ordinavit. Qui quidem, quoniam non facile ab his qui non elegerant, recipiebantur, manum sibi contrahebat armatam, & claustra murorum in hostilem morem vel obsidione cingebat, vel aggressione reserabat, & ad sedem quietis pacem prædicaturus per bella ducebat: His talibus contra Imperii majestatem, & contra reverentiam Apostolicæ Sedis admissis, per ordinem religiosi viri Urbis Papæ cognitione discussis, certa in eum, ex his quos malè ordinaverat, lata sententia est. Erat quidem ipsa sententia per Gallias etiam sine Imperiali Sanctione valitura: quid enim Pontificis auctoritate non liceret? Sed nostram quoque præceptionem hæc ratio provocavit. Nec ulterius vel Hilario, quem adhuc Episcopum nuncupare sola mansueta Præsulis permittit humanitas, nec cuiquam alteri ecclesiasticis rebus arma miscere, aut præceptis Romani Antistitis liceat obviare: ausibus enim talibus fides & reverentia nostri violatur Imperii. Nec hoc solum, quod est maximi criminis, submovemus: verum ne levis saltem inter Ecclesias turba nascatur, vel in aliquo minui religionis disciplina videatur, hoc perenni sanctione discernimus; nequid tam Episcopis Gallicanis quam aliarum Provinciarum contra consuetudinem veterem liceat, sine viri venerabilis Papæ Urbis æternæ auctoritate, tentare. Sed illis omnibusque pro lege sit, quicquid sanxit vel sanxerit Apostolicæ Sedis auctoritas: ita ut quisquis Episcoporum ad judicium Romani Antistitis evocatus venire neglexerit, per Moderatorem ejusdem Provinciæ adesse cogatur, per omnia servatis quæ Divi parentes nostri Romanæ Ecclesiæ detulerunt, Aetî pater carissime Augusti. Unde illustris & præclara magnificentia tua præsentis Edictalis Legis auctoritate faciet quæ sunt superius statuta servari, decem librarum auri multa protinus exigenda ab unoquoque Judice qui passus fuerit præcepta nostra violari. Divinitas te servet per multos annos, parens carissime. Dat. viii. Id. Jun. Romæ, Valentiniano A. vi. Consule, A.C. 445. By this Edict the Emperor Valentinian enjoined an absolute obedience to the will of the Bishop of Rome thro'out all the Churches of his Empire; and declares, that for the Bishops to attempt any thing without the Pope's authority is contrary to antient custom, and that the Bishops summoned to appear before his judicature must be carried thither by the Governor of the Province; and he ascribes these privileges of the See of Rome to the concessions of his dead Ancestors, that is, to the Edict of Gratian and Valentinian II. as above: by which reckoning this dominion of the Church of Rome was now of 66 years standing: and if in all this time it had not been sufficiently established, this new Edict was enough to settle it beyond all question thro'out the Western Empire.
Hence all the Bishops of the Province of Arles in their Letter to Pope Leo, A.C. 450, petitioning for a restitution of the privileges of their Metropolitan, say: Per beatum Petrum Apostolorum principem, sacrosancta Ecclesia Romana tenebat supra omnes totius mundi Ecclesias principatum. And Ceratius, Salonius and Veranus, three Bishops of Gallia, say, in their Epistle to the same Pope: Magna præterea & ineffabili quadam nos peculiares tui gratulatione succrescimus, quod illa specialis doctrinæ vestræ pagina ita per omnium Ecclesiarum conventicula celebratur, ut vere consona omnium sententia declaretur; merito illic principatum Sedis Apostolicæ constitutum, unde adhuc Apostolici spiritus oracula reserentur. And Leo himself, in [[16]] his Epistle to the metropolitan Bishops thro'out Illyricum: Quia per omnes Ecclesias cura nostra distenditur, exigente hoc à nobis Domino, qui Apostolicæ dignitatis beatissimo Apostolo Petro primatum, fidei sui remuneratione commisit, universalem Ecclesiam in fundamenti ipsius soliditate constituens.