Clinog and Clydno have been identified as the same person. The former name is said to be a corruption of the latter. Also, the two names share the same cognomen, which means Edinburgh. However, their pedigrees indicate they were not the same individual as the following table, which uses the manuscript form of their names, illustrates. Clinog was a generation earlier than Clydno.
|Gen.||HG 7||BGG 3||ByS 15|
|2||Clydno Eidin||elphin||glydno eidin|
|1||[C]linog eitin||Kynnỽyt Kynnỽydyon||vryen|
(Three other sons of Cynwyd Cynwydion who are mentioned in BGG 3 have not been included in the above table .)
In ByS 15 Clydno appears as the father of Euronwy, the wife of Gwaith Hengaer and the mother of St. Gwrwst. In CO his daughter is mentioned in a list of “the gentle, golden-torqued ladies of this Island” as “Eurneid daughter of Clydno Eidin”. The medieval poem Y Gododdin by Aneirin celebrates the valour of his son, Cynon, in the battle of Catraeth which occurred c. 600.