Tiaral

Brotherhood (alliance?) of steel

It won't evoke the right associations.

Honor and courage

Sounds like "Lock Tar Ogar."

My character will probably be named Aldrik Folkenrat.

Added 12 minutes later

Unwavering

Good.

Smile of Fortune

I had the same thought, actually. Then I decided that it's more suitable as a name for some kind of casino.

Hermes/Cronus

If you're going to use gods, wouldn't it be more logical to choose Athena or Ares, for example? Hermes was more of a patron of merchants, not mercenaries. And Cronus isn't even remotely related to them.