The basic idea of the character is a clerical wanderer, who more or less repeats lessons that this traveling god "taught" someone in a mythical contest.I didn't notice Mongrel earlier, and yeah, it does sound pretty close. I actually completely missed that one, when looking for something close.
This god, by the way, would be more of a "demi-god" or a "saint", than a true "Deity". It wouldn't have temples, and it would be a much more mythic character that does have a very minor religion attached to it (a la Heracles).
As for the feat, it's really just a way to put Knowledge (Geography) into the hands of a traveling cleric. Granting class skills through a feat has been done before - nameley in Eberron, I think.
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