Detail of the fountain, located to the side of the church, with the representation of the god Oceanus, the symbol of Jublains
|Region||Pays de la Loire|
|o Mayor (2014–2020)||Pierrick Tranchevent|
|36.01 km2 (13.90 sq mi)|
|o Density||20/km2 (53/sq mi)|
|Time zone||UTC+01:00 (CET)|
|o Summer (DST)||UTC+02:00 (CEST)|
|Elevation||104-190 m (341-623 ft) |
(avg. 147 m or 482 ft)
|1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries.|
Jublains, formerly spelled Jubleins, is the site of ancient Noeodunum (also spelled Noiodunum or Noviodunum), the capital of the ancient Gallic tribe of the Diablintes, later occupied and settled by Romans and called Civitas Diablintum. Noeodunum (? in Greek language sources), was the chief city of the Diablintes, or of the Aulircii Diaulitae, as the name appears in the Greek texts of Ptolemy (ii. 8. § 7). There is no doubt that the old Gallic name of the town was exchanged for that of the people, Diablintes - which Civitas Diablintum. In a middle age document, referred to by D'Anville, the town's name is written Jublent, and hence comes the corrupted name Jublains. Jublains is a small place not far from Mayenne, where some Roman remains have been discovered.
A name "Nudionnum" occurs in the Theodosian Table between Araegenus (modern Vieux in Calvados) and Subdinnum (modern Le Mans), and it is marked as a capital town. It appears to be the Noeodunum of the Diablintes, hence Jublains.
In an excavation in London a writing tablet was found with a note about a slave girl from Jublains. It read:
'Vegetus, assistant slave of Montanus the slave of the August Emperor, has bought the girl Fortunata, by nationality a Diablintian, for 600 denarii. She is warranted healthy and not liable to run away ...'