I've always liked that one too, as well as Baronet.
I use baronet a lot. I'm running my campaigns in Bissel, a margravate (borderland ruled by a margrave) in Greyhawk. The Greyhawk gazateer says Bissel has 26 knight-baronies as its local governments, so I've taken to calling them Baronets. That's a title that should be called "sir" in British tradition, but is inheritable. I've been calling them "Lord" instead.
However, my players sometimes confuse "Baron" and "Baronet", and I've begun to use that. I have the most powerful ruler calling himself "Baron" instead, and other NPC's reacting when the PC's choose the one title or the other to refer to this guy, as it's become a political statement.
