The Roman Map of Britain Coriono Toitarum Eildon Hill North, Roxburghshire, Borders

Coritiotar (R&C 177) next
LEG( ) A[3] Q(uintus) Calpurnius Concessinius praef(ectus) eq(uitum) caesa Corionototarum manu praesentissimi numinis dei v s (RIB 1142 altar)

    The altar found at Hexham Abbey, presumably robbed from Corbridge, is a very important clue to the source of Corionototarum. North from Corbridge Dere Street roughly divides what is regarded as the tribe of the Selgovae on the west from the Votadini on the east. The major hill-fort, the tribal oppidum, of the Selgovae was Eildon Hill North (NT554328), Roxburgh. On the opposite side of Dere Street is the Roman fort Trimontio Newstead (NT5734). Eildon Hill North overlooks the river Tweed.

    Coriono- is*Coria 'tribal center' with *-no- suffix (Charles-Edwards: 'used to form words for leaders or representatives of a group') and thus means 'chief tribal center'.

    The rive-name Tweed is recorded in Bede as Tuidus, Twidus and later Tweoda ca. 800. Tweed is the next element in the name as -toit-. The final element looks like the common river-name suffix -ara that means 'river'. Alternatively, -arum would follow the example of Ratae Corieltauuorum with the genitive plural -orum.  Eildon Hill North was the Chief tribal center of the Tweed-dwellers.

Eildon Hill North (NT5532)
Roman Signal Station (NT5532)