Just William's Luck [1948] and
William Comes to Town [1948]

Just William's Luck [1948]

Val Guest takes charge of this British comedy about a young boy who, along with his gang, finds himself embroiled in a haunted house. Starring William Graham, Garry Marsh and Jane Welsh. William Graham gives a good performance in his part as William Brown, the title character involved who has to be careful with himself while in the house, as do his gang. He suits his role well and is always watchable on screen.

William Comes to Town [1948]

William and the Outlaws, put out by the cost of monster humbugs, attempt to secure more pay and shorter hours for schoolboys. ~ imdb