Wurtenberg is the "land of the Ruoffs", but today it seems that more of them live in USA. The name of this German Land changed in history from Wirtenberg to Wuertemberg, today Württemberg (see government home page in Englisch which gives a lot of information www.baden-wuerttemberg.de/en/A_warm_welcome_to_Baden-Wuerttemberg/88737.html
Martin's parents were John Ruoff (*1792) and Ursula Leisht. John reads in German Johann and Ursula named Leicht, which is a German Name; sht is uncommon. If you could give a town or village in Wurtemberg, a search would be more easy. Johann is a very often name, and a lot of people left the Wurtemberg region at this time because of hunger ofter cold and lost harvests (small ice-time).