Ah, I can see that happening.
I have a fairly uncommon first name IRL (Allison), and I grew up being the only "Allison" all through elementary and high school. Whenever I hear someone else named Allison I get really irritated.
It is an odd pet peeve, but I never responded to anything else. I never had a nickname like "Ally" or anything like that (It isn't my name, don't call me that...)
I don't ever hear Lokii, though. ^^;