First things first: I am surprised to see you actually RP, since my impression of your way of playing PS isn\'t a particularly good one, since it looks very much like mere PLing. You now fit it into some RP which I acknowledge.
As for your history, I am very wary of the \"I come from another world\" thing. It is used very often and more often than not used solely to evade sticking to the PS setting (i.e., to bring in completely unrelated things through the back door). Granted, it says there are portals in Yliakum. But from the way I interprete the history, noone arrived through them since the initial influx, which ended several hundred years before now. Therefore, if at all possible, you should avoid this.
