Thanks for your response Pat.

Yes, I did look at that before posting, but still felt, although it looks obvious, that I'd be guessing that balnykilley = Balla Killey = Balla Killey clieu and that Ballakinney = Ballakinnag. I just wondered if there was anyone well versed in the history of the area, particularly for 18th & 19th century, who might give me any more certainty.