Cocamaster said:
Try mine, I dare you.
Seriously, if you do find it's origins and meaning, I'll email you a cookie.
Knörl
That's with an "o" with two dots on top.
I found this under Scottish Etymology:
[KNORLE, KNARLE, s. A knot, protu-
berance, lumps, Banffs. ; knarle, Clydes.]
Keep in mind that many ancient cultures may have shared a common Indo-European language [Indo-European languages], so while the spelling may be slightly different, they could mean the same thing.
EDIT: Oh, my lasst name on my mother's side, Cooper, means "Barrel Maker". It's a very common name.
On My Father's side, Wall, means "one who lived by the wall (medieval towns always used them for protection) was Wall/Walls/Waller, and the name was also used to designate the one who did the repair"