Fighting here in North Wales (2,11)
I believe the answer is:
at loggerheads
'fighting here' is the definition.
(to be at loggerheads with someone is to fight them)
I can't explain the remainder of the clue.
(Other definitions for at loggerheads that I've seen before include "In confrontation" , "In violent dispute" , "Disagreeing with" , "In violent disagreement" , "Quarrelling" .)