Rachel Bromwich writes that such a figure has origins in traditional names/characters: "Beli Mawr is a character rooted far too firmly in Welsh tradition for his existence to be accounted for merely as an adaptation of Nennius's Bellinus. Further, Loth showed that Manogan itself can be explained as a Celtic name, since Monocan appears in the Cartulaire de Redon (RC LI, p. 10; Chr. Br., p. 152). Two further instances of this name in Celtic sources may also be included: Jes. Gen. XVIII Manogan m. Pascen m. Cadell; and the Ogham inscription MINNACCANNI (Macalister, Corpus Inscriptionum Insularum Celticarum I, no. 135)."[12]