 Julie Andrews (I) (qv) was asked to reprise her stage role of  Guenevere, but had become such a popular film star by this time that  she was unable to accept the role. Ironically,  Jack L. Warner (qv), who produced the movie version of  _Camelot (1967)_ (qv), was the same man who produced the film  version of _My Fair Lady (1964)_ (qv), and who had given the role of  Eliza Dolittle to Audrey Hepburn (qv) because he thought that  Julie Andrews would not be a big enough box