I think the Bard is an excellent way to create nobles. An NPC ruler in my campaign:
The King:
Str 10, Dex 10, Con 8, Int 14, Wis 16, Cha 16; Bard 3; HD (3d6)-3; HP 7;
Skills: Bluff +11, Diplomacy +11, Intimidate +5, Knowledge(History) +5, Knowledge(Local) +8, Knowledge(Religion) +5...