You will all be Lower powered Old Bloods either because you are young, untrained, or inexperienced. (lvl5 in 4th edition). Your background and such are up to you. With a city of this size anything is possible but check it with me first so I might give you any
You will find yourself in ambervale where there is alot of activity. All of the major houses are planning settlements and expedition into the "wild west" the town is thick with settlers mercenaries, knightss soldier, and merchents. The House Durai is about to set off to found a settlements. It will be the furthest west of a group of new settlements over a 3 week march into the frontier. You are here to become part of that settlement. Either as part of the Durai noble house, a mercenary hiered by the young noble leading the venture. You could also be a reprentitive or a holy man sent on behalf of the King.