Director, actor, and screenwriter who is best known for his Billy Jack film series, four films in which he played a no-nonsense gunslinger.
He played football at the University of Wisconsin.
He started a Montessori school in Santa Monica, and it rapidly grew to become the biggest of its kind in the entire US.
He married wife Delores Taylor in 1954.
He starred in Robert Altman's The Delinquents in 1957.