As a Dalish player, I assume that he was at the Bracilian Forest because of intel that their was a tainted mirror there, and with a 5th Blight, this was kind of an emergency. The less tainted objects there are, the better. Meeting a Dalish who had Warden potential was unexpected, but the Warden's will take anyone they think has potential, regardless of where they come from.
What about you? Why do you think he was at a specific place in your canon games, and not the others.