Large dog and person from northern France (8)
I believe the answer is:
alsatian
'large dog and person from northern france' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for alsatian that I've seen before include "Large dog and someone from Alsace" , "Old Frenchman" , "Wolf-like dog" , "Dog (from French border region?)" , "Breed of dog" .)