Watch Mathias Kneißl for Free: How to Stream the Movie Online at 123Movies. . Inspired by the real life events of Mathias Kneißl, a marginal man, son of poor farmers from Bavaria, in the late XIX Century. Mathias stole from the riches to give to the poor, becoming a hero for the rural people, and a popular social rebel. He was chased by the police until his unfortunate sentence.