Re: Who raised James Kirk in the primary reality?
Maybe the Kirk brothers were sent down to Kansas to stay with the Kent family in Smallville.
In terms of on-screen canon, I don't think there's anything indicating Kirk's parents were in Starfleet. And the late Sam in Operation-- Annihilate! didn't appear to be in Starfleet either.
Curly: If at first you don't succeed, keep on suckin' til you do succeed.
--Movie Maniacs (1936)