Note 41 — Chapter IX · Place-name Stories
Reading edition
It is just possible, however, that in an older version it was named, and that the place was no other than the rock just above Ystrad Yw, called Craig Lwyd or, as it is said to be pronounced, Craig Ỻwyd. If so, Ỻwyd would seem to have been substituted for the dissyllable Ỻwydog: compare the same person called Ỻwyt and Ỻwydeu in the Mabinogion, pp. 57, 110, 136. ↑