Search:

I found a reference with this Karl Mueller b. 1820 d. 1889 attached to stuttgart Germany. I too have not found that this particular fellow had anything to do with running a knife shop of any kind.

A little info about a Karl Muller born in Germany in 1820 and some of his work:
Brooklyn Museum: Karl L. H. Mueller
I know it says Mueller, but his work was inscribed with "K. Muller" as on the...