Question: is jost a jewish name?
Answer: Jost is a German form of Justus, the Latin equivalent of Zaddik. ... Ibn Zaddik is documented as a Jewish family name in the 12th century, Sadok in 1264 and Zaddik/Cadique in the 14th century. Justo, derived from Justus, the Latin equivalent of Zad(d)ik, is found in the 17th century.