Mister Cinders (1935)

Bill is an all-day-worker at his rich uncle's estate, where he is wanted everywhere and by everyone, even by the local theatre group. He manages his two dull stepbrothers and his altive aunt with unappalling optimism, until a smart Princess Charming disguised as a Fairy Goodmother maid appears and makes him go to a ball that will change his life. British musical twist to the Cinderella story.