Deduce Away! Mr. Lion lived in a hotel and worked out of a shop in the basement. The point of this is not to figure out who he is but if you can identify his work. From some of the speculation I could do a better job on the makers I have written about. As for Ross King there is an article about him in the March issue of "Precision Shooting". It seems to me that if a maker marked his work most don't look beyond this.

MP Sadly Deceased as of 2/17/2014