The two men that Huck and Jim meet claim to be who?

Two men come running through the woods and beg him for help. Huck makes them cover their tracks and then all three paddle back to the river.  One man is about seventy and balding, and the other is in his thirties. The younger man specializes in printing and theater while the older man often "works" camp revivals.

The younger man then tells them that he is actually the direct descendent of the Duke of Bridgewater and therefore is a Duke. The older man gets jealous and so he then tells them that he is the Dauphin, or Louis the XVII.