This is the THIRD time you have posted asking about the meaning of your name.
Mike C. has ANSWERED you already -- TWICE.
I will cut and paste
Mike C.'s ANSWER to you HERE.
OOOOOKAY? Now,
READ THIS:
In Japanese myou can mean:
1. "dark"
2. "strange"
3. "command, decree, life, destiny"
shi means a whole lot of different things (including "offspring"), but I think it means something special when it forms part of a name, I just can't remember what.