2 Place names meaning please ?

Mountainsandh

I would be very grateful if someone here could bring any light to the meaning of the two following place names :

Deighric (also seen as Deighiric, English Dyrick)

and

Breo (English Broe)

These are in co Waterford, and to give some context, they are listed in "Names of the Decies" by Canon Rev Power ; here's the only quote :

Lickoran Parish

THIS is a small and unimportant division. Two of its townland (mountain) names, Deighric and Breo, defy
analysis, and are evidently, like many mountain and most river names, of great antiquity. The names quoted
designate two remarkable dome- shaped hills, which because of their resemblance and contiguity are
grouped together in local reference.

The very scant further descriptions say "meaning unknown" for Deighric, and for Breo, it is simply said :

BROE, Breo. Meaning unknown; the word certainly signifies flame or fire but its sense as a place-name is
hard to determine.

Part of the Dyrick townland is also listed as belonging to the Lismore Diocese.

Any knowledge or even hint on these would be greatly appreciated, thanks !

edit : I have tried a number of online dictionaries and glossaries with no luck

An gal gréine

Found Deighric Uachtarach and Deighric Íochtarach on map east of sléibhte Chnoc Mhaoldomhnaigh and north of the town of Ceapach Choinn.
Couldn't find meanings either but the deigh would have meant ice so that may be something to go on.
Breo had a meaning of rot or putrefy.