Oh, Baby!(1926)

Billy, a diminutive manager of prizefighters, is priming Jim Stone for the heavyweight championship when Charley Burns (Arthur Graham?) discloses that for the past 8 years he has invented a mythical wife and daughter for the benefit of his Aunt Phoebe, who now requests a visit from them. He finally persuades Billy to pose as his daughter, Evangeline, while Miss Brennan, a magazine writer, consents to take the role of his wife.