It might be redundant to say that Jerry Lewis did his best work with Frank Tashlin as director, either by himself or with Dino. He was a comic genius, but it took another genius to bring out the best in him.
Paramount dusted off the Preston Sturges classic The Miracle Of Morgan's Creek for Lewis in his early years as a solo entertainer. When he was with Dean Martin, Paramount was always remarking earlier hits for the team so this was in tradition. It took a lot of rewriting because Lewis's raucous type of comedy is far different than Eddie Bracken's more gentle schnook like character. Still Jerry does generate a lot of whimsy and pathos in his character of Clayton Poole.
It seems years ago Lewis had a big old torch for Marilyn Maxwell who left town and became a Hollywood Star. Maxwell's younger sister Connie Stevens is also crushing out on Lewis, but he can't see for the glare in Maxwell's spotlight.
Marilyn is now in a family way expecting triplets as a result of a marriage to a bullfighter who died in the arena after the honeymoon. It was all a blur and she can't remember where she got married, only that she did.
Her agent Reginald Gardiner fixes up the answer, have her go away to quietly give birth, then send them to her old friend Lewis to take care of. Later she can adopt. Hey, it worked for Loretta Young back in the day.
Of course Jerry gets fond of the three and goes to extraordinary lengths to tend to the kids. His scenes with the infants are both Tashlin and Lewis at their best.
The only real criticism I have is Lewis's best comic moment is unfortunately right at the beginning where he gets involved with a some loose chimney bricks, a runaway firehose, and a great deal of chimney soot, wreaking havoc for the whole neighborhood. Something that good should have been saved for last.
Rockabye Baby is not quite the classic of Miracle Of Morgan's Creek, but it's right up there with some of Jerry's best.