Mine's rather odd. "Tyr" came from trying to change a word into a three letter word, the first word was Tier. I don't know why I picked that word but I had to shorten it. 711 because my favorite numbers are 7 and 11, I've been stamping things with 711 for about 10 years now. Also I didn't think that Tyr711 would be my public username, once I found out it was I was just too lazy to change it.