Use point-buy, go crazy with the enemies. No noble worth mentioning doesn't have several enemies, ranging from the arranged marriage they're trying to get out of, to the junior Lord who wants to get promoted into your title and needs you out of it first, to the upper Lord who your father insulted at a party and holds a grudge against you for, to the enemy Noble who wants to increase his holdings by invading yours, to the circle of gossip-mongers at Court that just think they're cooler than you...
And that's just enemies as nobles, if he's also a soldier, there might be subordinates or superiors who resent your character and think he'd have never gotten anywhere without the title.