William "Biff" McGuire with Kathryn Grant in 1955's 'The Phenix City Story' He appeared in 'South Pacific,' 'The Young Man From Atlanta' and 'Morning's at Seven' on Broadway and in films including 'The Heart Is a Lonely Hunter.' William "Biff" McGuire, whose Broadway career spanned seven decades and included a role in the original South Pacific and Tony-nominated turns in The Young Man From Atlanta and Morning's at Seven, has died. He was 94. McGuire's death was announced by the Seattle Rep, for whom he performed in more than 30 productions, including Life With Father (directed by George Abbott), Saint Joan,