 | This article includes alist of references,related reading, orexternal links,but its sources remain unclear because it lacksinline citations. Please helpimprove this article byintroducing more precise citations.(October 2025) (Learn how and when to remove this message) |
| Diocese of Gaul Dioecesis Galliarum | |
|---|---|
| Diocese of theRoman Empire | |
| 314–486 | |
 Roman Gaul - AD 400 | |
| Capital | Augusta Treverorum |
| Historical era | Late Antiquity |
• Established | 314 |
• last Roman territory overrun byFranks | 486 |
TheDiocese of Gaul (Latin:Dioecesis Galliarum, "diocese of the Gaul [province]s") was adiocese of the laterRoman Empire, under thepraetorian prefecture of Gaul. It encompassed northern and easternGaul, that is, modernFrance north and east of theLoire, including theLow Countries and modernGermany west of theRhine.
The diocese comprised the following provinces:Gallia Lugdunensis I,Gallia Lugdunensis II,Gallia Lugdunensis III,Gallia Lugdunensis IV (Senonia),Belgica I,Belgica II,Germania I,Germania II,Alpes Poenninae et Graiae andMaxima Sequanorum.
The diocese was established after the reforms ofDiocletian andConstantine I in c. 314. In the year 407, the Rhine frontier was breached, and much of Gaul lost to barbarian tribes temporarily. Roman control over most of Gaul and the Rhineland was restored until the death ofValentinian III in 455. The territory remaining in Roman hands after the 450s was in the south in the Auvergne and Provence until ceded in 475 and in the northwest, the so-called "Domain of Soissons". After its fall to theFranks in 486 and the end of Roman administration in northern Gaul, the diocese can be said to havede facto ended.
 | Thisancient Rome–related article is astub. You can help Wikipedia byexpanding it. |