Just starting RotRL and one of my players, a half-orc sorcerer, has written an elaborate backstory. Here is some of it:
"The Sakhra is an isolated tribe of half-orc descent who have lived virtually disconnected from the outside world since the age of darkness circa -5000 AR along the border of the Mushfens and the Fenwall Mountains in southern most Varisia. The Shakhra number just under 40 according to recent reports but it is possible that many more could remain hidden, perhaps quite intentionally. They are a hunter/gatherer society who live a strict lifestyle of physical training, intense periods of meditation and unfamiliar religious ritual. For sometime it was believed the Sakhra were a somewhat existential and atheistic community but other evidence suggests they worship the ancient Thassilonian goddess Lissala under the name 'Nisi' and the original Seven Virtue Rule is a significant aspect of their social and religious structure."
I love the time he's put into the story, but I have two potential problems I'd like some advice on.
1) Is it plausible that a half-orc tribe could have developed in this way. I'm inclined to allow it because I think it's an interesting and original idea.
2) Will allowing this player to worship Lissala pose problems for our Adventure Path, given that he will have probably access to knowledge about ancient Thassilon, the runelords, etc. based on his faith.
This is also the first time I'm GMing so any advice is appreciated!