Actress Mary Frann — born Mary Frances Luecke — is best remembered for her role as Bob Newhart’s wife, Joanna Loudon, on the CBS sitcom Newhart. She died of a heart attack on Sept. 23, 1998 at the age of 55. She was married to T. J. Escott from 1973 to 1983 but had no children. She was survived by two sisters and a brother.
