Is the centurion from a patrician ancestry? If so i was thinking maybe his brother got some education and he's now his lawyer (and philosopher). I'm not sure how historically accurate this is. It might be that unless you were prosecuted for a capital offence (in which case you would be judged in rome and a senator could represent you) you'd have to represent yourself.
If anyone (#bigsearch) knows more about this than I do, please share.

Anyway if i can't be a lawyer I'd be a hunter, so i'm in regardless.