Attested: RC Rumabo
Where: Probably at the mouth of the Scottish river Tyne, near Dunbar, around NT6278, deduced from its position in RC’s list, between Evidensca (probably Berwick-on-Tweed) and Velunia (Bo’ness).
Name origin: The –abo ending presumably meant ‘river’, from PIE *ap- ‘water (discussed further under Abona), but where did the Rum- part come from? There seems nothing to link Rumabo specially with ρευμα/rheuma ‘flow, stream, tide’, but there is an intriguing parallel in the river Rhymney beside Cardiff. Rhymney is said to derive from Welsh rhwmp ‘auger, boring tool’, which came from ρομβος/rhombus ‘magic wheel, geometrical figure’, from PIE *wer3- ‘to turn, to bend’. The link is then that the Tyne and the Rhymney estuaries both almost corkscrew towards the sea!
Notes: The Tyne estuary was larger in Roman times (before the effects of siltation, embankment, and isostatic rebound) and probably reached almost to Traprain Law, a hill-fort tribal centre famous for its silver hoard.
Last Edited: 16 June 2016