Star Wars Purist said:
Anyway, do you guys take the "I took you to live with my brother, Owen" quote from Ben (from the ROTJ novelization) into account for your Prequels?
Yes, to an extent.
In my personal canon (as of this moment, anyway), Obi-Wan is Owen's half-brother, the result of a drunken one night stand their father Cliegg had with a space addict named Aika. When Cliegg refused to help Aika raise Obi-Wan, she placed him in the care of a Jedi Knight visiting Tatooine, so the two never grew up together or even knew of each others' existence. The truth is only uncovered later, when Cliegg tells Owen of the illicit tryst and the illegitimate child while on his deathbed; presumably, Owen later reveals this information to Obi-Wan, as he comes to know the truth as well.
I don't think I'll be relating any of this when/if I get around to writing my new PT out, though; it's all just backstory.