In episode 14 a girl refers to Jan by name at 16m50s, telling him to quit drinking and come dance. It is pronounced "Yan".
In episode 16 Polly (hard to recognize her as the girl pulling him around) is seen talking to him about a job she wants to apply for in England. He reads the employment details.
Polly tells Jan they might need a footman too, so that is his job.
Both dreams are dashed later when Hans explains that it is a scam.
Blonde-haired Jan is later seen accompanying the brown-haired Thomas, both wearing top hats, as they run off to tour England in episode 17.