She will best be remembered for her character as stranded castaway mary ann summers in the popular 1960s cbs sitcom ‘gilligan’s island,’ which aired from 1964. Webdawn wells, who played mary ann summers on gilligan’s island, died on december 30, her publicist told multiple outlets. Wells was 82 and died of complications. She is best known for her role as mary ann summers in the sitcom gilligan's island.