Little Miss Big (1946)

Mary Jane Baxter (Fay Holden), a wealthy woman has named her cocker spaniel as her heir, in order to thwart scheming relatives. In learning of her action, her nephew, Eddie Martin (Frederick Brady as Fred Brady) institutes sanity hearings to have her committed to a hospital. She runs away and is befriended by a barber,Charlie Bryan (Frank McHugh) and his family.