Paul A. Partain
Paul Alan Partain billed professionally as Paul A. Partain was an American actor, perhaps best known for his role in the original The Texas Chain Saw Massacre as the handicapped wheelchair bound Franklin Hardesty.
Partain was born in Austin, Texas. He served in the United States armed forces during the Vietnam War, and on his return to the U.S., started working at an electronics manufacturing plant during the day, and at a dinner theater at night. In the fall of 1972, Partain found out he had been laid off from the plant, and while at the theater where he worked, was asked to audition for the part of Willy in the 1974 Sidney Lumet film Lovin Molly, by the theater director there. Through the help of this director, Partain got the role and his acting career was begun.
Source: Wikipedia