Does not seem like any personality disorder based on the information you gave. It seems like that is just the man he wanted to be.
I can't make a diagnosis with that information, but the more important issue is what seems to be your frustration and disappointment with what seems as more loyalty to his family of origin than to the family he created. That's a hard issue to come to grips with, and the best I can suggest is a series of conversations with a good therapis to try to understand what was going on.