Geoffrey Wall and Leonard Wall - were they related?

I am trying to find out if there is a family connection between two young men who wrote poetry during WW1 and who were born within months of each other on the Wirral Peninsula in the north west of England. They have the same surname - Wall. 

Geoffrey Wall (see photo) was born in Liscard on the Wirral Peninsula in 1897 and was killed in a flying accident on 6th August 1917. He counts as Australian as his parents went to live in Australia when he was ten years old. Leonard Comer Wall was born in West Kirby on the Wirral Peninsula in 1896 and was killed in action in France on 9th June 1917. I'd love to know if the two Wall boys were related and also to find a photograph of Leonard. If anyone can help please get in touch.

Photo:  Geoffrey Wall.