No, I'm positive that Jimmy Carter pardoned Patty Hearst. The date was Feb. 1st 1979. My source is Patty Hearst's book. No one would know better than her.
http://en.wikipedia.org/wiki/Patty_Hearst
Attorney F. Lee Bailey defended Patty Hearst. Legal analysts and Hearst herself later said the famed attorney did a poor job defending her. He gave very short and weak closing arguments. Hearst was convicted of bank robbery on March 20, 1976. Her seven-year prison term was eventually commuted by President Jimmy Carter, and Hearst was released from prison on February 1, 1979, having served only twenty-two months. She was granted a full pardon by President Bill Clinton on January 20, 2001, the final day of his presidency.
http://www.cnn.com/US/9910/06/hearst.pardon/index.html