Tad Z. Danielewski, who counted Martin Sheen, Sigourney Weaver, James Earl Jones and Mercedes Ruehl as students in his acting workshop, died Jan. 6 of cancer at his home. He was 71.Born in Poland, Danielewski survived a Nazi labor camp in World War II. He later directed and acted in Polish and British army theater productions in West Germany. He studied acting at the Royal Academy of Dramatic Arts in London before moving to the U.S. in 1948, where he studied at several universities. In the late 1950s, he founded the Tad Z. Danielewski Actors’ Workshop in New York City, later opening a Los Angeles branch. He also worked as a film and television director. In 1967, he was part of a team that won an Emmy award for the news documentary “Africa.” From 1977 to 1988 he was professor of theater and film at Brigham Young U. in Utah. He also was a professor emeritus at the U. of Southern California. He is survived by his wife Lillian, two sons and a daughter.