Ott Jud

Ott Jud ("Ott the Jew") was a 15th-century Austrian martial arts master, specialized on grappling ("Ringen").
The version of his treatise in Codex Lew states that he was a baptized Jew.
Paulus Kal describes him as the wrestling master to the rulers of Austria, and names him as a member of the Society of Liechtenauer.
Ott's treatise on "ringen" is repeated throughout all of the early German treatise compilations and seems to have become the dominant work on the subject within the Liechtenauer tradition.