I was reading a Wikipedia article (not the most reliable source, I agree), but it gave another interested possible name meaning for
Katherine.
Another potential origin of the name is the Armenian word Կատար, gadar, meaning "peak" or "summit." In Armenian, the equivalent name is Կատարինէ, Gadarine.
Do you believe this theory holds any water?
Actual page:
http://en.wikipedia.org/wiki/Katherine