Note 1 — Chapter VIII · Welsh Cave Legends
Reading edition
This seems to be the Goidelic word borrowed, which in Mod. Irish is written cnocc or cnoc, ‘a hill’: the native Welsh form is cnwch, as in Cnwch Coch in Cardiganshire, Cnwch Dernog (corrupted into Clwch Dernog) in Anglesey, printed Kuwgh Dernok in the Record of Carnarvon, p. 59, where it is associated with other interesting names to be noticed later. ↑