@orbax
If a player presented me that backstory as a GM for a lvl 1 I'd just snicker and tell him to be serious. This is fairly normal and common place for PnP. As far as your second post that is some really nice head canon you have going there.
Game shouldn't start at lvl 1, shouldn't be limited to lvl 10. Balancing high levels in turn based will be a nightmare when they announce BG4.