|Attestation:||ateporix, eskikorikos, ośoris, rik, rikanas, rikoi, rio, riol, riop, toutoris|
The well-attested lexeme (OIr. rí) is frequently used as onomastic element (as base or second element of compounds); cf. KGP: 260 f., GPN: 243–249, Lambert 1994: 25, 33, 42, 60, DLG: 260 f., Meid 2005: 72–90, Delamarre 2007: 230 et passim, Matasović 2009 s.v. Though usually associated with men, it can appear in female names (Stüber 2005: 64 f.); its primary meaning must have been 'ruling over, having power over' (Stifter in Marchesini & Stifter 2018: 147).
Names with rīg- as second element in a compound are not consistently spelled: the guttural is not reflected in writing in the nominative before s in two instances (toutoris, ośoris). This could be taken to indicate that the cluster [χs] had already been reduced to a simple sibilant in this position, but cf. the late attestation ateporix with [χs] written with in the Latin alphabet.
|Delamarre 2007||Xavier Delamarre, Noms de personnes celtiques dans l'épigraphie classique. Nomina Celtica Antiqua Selecta Inscriptionum, Paris: Errance 2007.|
|DLG||Xavier Delamarre, Dictionnaire de la langue gauloise. Une approche linguistique du vieux-celtique continental, 2nd, revised edition, Paris: Errance 2003.|
|GPN||David Ellis Evans, Gaulish Personal Names. A Study of Continental Celtic Formations., Oxford: Clarendon Press 1967.|