Got a few dates regarding this family.

Graham L Smith was born Bolton (1935)

His Father was William Smith (1907) who married Doris Long (1905) in 1932.

William had 2 older brothers Jack (1901) & Herbert (1904). Apparently William was a minister and both Jack & Herbert were the black sheep.

Their Father was called John and think he was married to someone named Mary. As in the 1911 Census John was a widower but in the 1901 Census shows the mother as shown Mary.

Hope this helps.