After a bit more thought, I now wonder if an undefined smith would almost always be a blacksmith, and any other kind would be described more specifically as whitesmith, tinsmith, goldsmith etc etc. I've no idea how big a place Blackmore was, but in a rural setting where horses would have been more or less as common as cars, vans and tractors are now, there might well have been a need for more than one in a village. (Or perhaps they were partners and worked togther.)
Arthur