Balquhidder, pronounced Balwhither, takes me down memory lane.

Forty years ago I came across the Scottish poet Robert Henryson. fl 1500 (?) Henryson tried to write in such a way as to to bridge the language gap between England and Scotland. One way he did this was to use on the Latin "qu" for question words. Thus "qu" appeared where "wh" would appear today.

Although it has nothing to do with questions, Balquhidder seems to be the same phenomenon.