CAPTAIN.
CAPTAIN Barbossa.
Oh wait.
OT:
I cannot think of a default one, no.
You could take a soundset and change the pitch, speed, base and so on in a basic audio edit program. Should probably make it close enough.
Because, even if you find someone that sounds like Barbosa, chances are he will say stuff unrelated to your hero when commanded. Let's say the Paladin would sound like Barbossa, saying "By the light!" will not really suit with a pirate hero even if the voice acting is similar.