Hi Showman One,
Thanks for your comments. I know nothing about the circumstances of picture, but it has always intrigued me.
The little boy was my father (born 1918), together with his sister and parents, and their farmhouse is in the background. Presumably the man on the wagon was the showman.
Do you think he could have been a 'one-man show', or would he have been with a travelling fair?
Mike.