<P> When J.B. learns about the child, he assumes that David is the father . His suspicions are reinforced when, in a bit of bad timing, Polly and David each produce a different man whom they claim is the father . To his son's surprise, J.B. is delighted (he had been impatiently waiting for David to settle down and provide him with a grandson). In the end, David decides that he is in love with Polly and baby John . He tells his father that he is the father of the child and plans to marry Polly, all the while believing Polly is the child's mother . </P> <Ul> <Li> Ginger Rogers as Polly Parrish </Li> <Li> David Niven as David Merlin </Li> <Li> Charles Coburn as J.B. Merlin </Li> <Li> Frank Albertson as Freddie Miller </Li> <Li> E.E. Clive as Butler </Li> <Li> Elbert Coplen Jr. as Johnnie </Li> <Li> Ferike Boros as Mrs. Weiss </Li> <Li> Ernest Truex as Investigator </Li> <Li> Leonard Penn as Jerome Weiss </Li> <Li> Paul Stanton as Hargraves </Li> <Li> Frank M. Thomas as Doctor </Li> <Li> Dennie Moore as Mary </Li> </Ul> <Li> Ginger Rogers as Polly Parrish </Li> <Li> David Niven as David Merlin </Li>

Who played the baby in bundle of joy movie