Those concepts hinge on a lot of differant factors. Typically Nobles only marry Nobles. In the unlikely event of a Noble marrying a base born, or bastard it is very unlikely they'd be treated as true Nobility, but its possible. In these cases it goes beyond the scope of various mechanics, even those that use the Noble as a class. In most of these cases it can be represented by taking a level or two of Aristocrat. As far as resources they'd be drawn from that of the spouse. If the title is given as a reward, then odds are any special benifits will be also determined then, such as money and land. The resources would be somewhat self evident, I would think. I think the Feat mechanic could work just fine, for most cases. Though I don't see anything wrong with the concept of giving a Feat to a character as a reward if its warranted. Thats just my 2 cents.