It's his son.

The younger, the sharper.

This stripling made Casper Rubling,--[Dice, in gambler's slang]--poor wretch, pay for his loaded dice with his eyesight." He thrust his hand hurriedly into his jerkin as he spoke, and gave Gitta something which he had concealed there.

It was a set of dice, but, with ready presence of mind, she pressed them so hard into the crumb of the loaf of bread which she had just cut that it entirely concealed them.
All this had passed wholly unnoticed in the corner of the long, wide room, for all the numerous travellers whom it sheltered were entirely occupied with their own affairs.

Nothing was understood except what was said between neighbour and neighbour, for a loud uproar pervaded the tavern of The Blue Pike.
It was one of the most crowded inns, being situated on the main ferry at Miltenberg, where those journeying from Nuremberg, Augsburg, and other South German cities, on their way to Frankfort and the Lower Rhine, rested and exchanged the saddle for the ship.