Bertoul Joseph was a German missionary of the16th century. He was prior of the Convent of the Trinity, at Arras; and travelled in Hungary, and there redeemed from the hands of the Turks a large number of Christian slaves. He wrote, Iter Hungaricum: — Novus Artesice Typus in Tabula Expressus. See Hoefer, Nouv. Biog. Generale, s.v.