Thanks for those links Ronnie - I'll follow them up
From what I can gather from the Sites and Monuments Record, the old Gauger's house is still lived in and the Bonded warehouse still stands but much of the rest of the distillery has been altered or demolished. I live not too far away so I'll maybe take a detour past it some day!
My William Murray wasn't from Culsalmond but from Forgue, about 15 miles away where his wife and children remained while he lived and worked at the distillery, but he would have certainly known your forebears in such a small community.
Cheers
Gary