Geographically and geologically the land around Feuchtwangen comprises the eastern part of the Swabian-Franconian Escarpment Land (Schichtstufenland), also sometimes called the gypsum-keuper landscape.
He was converted to Christianity in 1601 in Feuchtwangen, and wrote Jüdischer Abgestreifter Schlangenbalg (The Jewish Serpent's Skin Stripped), in which he bitterly attacked his former coreligionists, whom he accused of hating "the most pious and innocent Jew, Jesus Christ," and in which he denounced their religious literature.
Altmann, son of Joseph Altmann, was born in Feuchtwangen and grew up in Ansbach.