>> That being said, as Tom Mezka was German, It is possible that Mezka is a slaughtered version of the name Metzger (this is the German word for butcher). The German pronunciation of the name could easily be understand as "Metzka". However, there are always other possibilities, but it is something to keep in mind. <<
I'm a German and think you are right with your assumption. It is a very good example! I would have given the same answer. But I have actually found the names "Mezka" and also "Meyka" in the German phone book! This confuses me also a bit.