I probably have some more you may be interested in and if we work together may be able to piece together .
The B Clark in 1821 has to be an adult, or would not have been listed. I expect he is more the same generation as James or even his father.
I have another Benjamin Clark from Godshill as follows
Benjamin Clark aged 50 , ag lab with wife Mary Ann aged 35 living at Godshill in 1841, by 1851 he is 57 from Godshillwood and his wife 45 from Salisbury and by 1861 Benjamin is 66 from Godshill with a son Thomas 28 ag lab, and daughter Emily 24 from Godshill, after his wife's name are the initials NH, I wonder if they mean not home? Looks like son Thomas is still around in 1891 but says born Ashley Walk aged 60 general labourer married to Jane from Frogham with children Thomas 19 ag lab,Beatrice R 10 scholar and Mary A 7 scholar.
Now this family I also believe I can connect to mine as I have a family story that goes - one of Harriet Clarks male relatives was sent to Australia as a convict and from a researcher here in Australia-
"William Clark son of Benjamin Clark born abt 1821 christened at Fordingbridge 1824 died 15 Dept 1900 Dromedary Tasmania married Christina Dykes 13 Jul 1850 Macquarie Plains Tas.
"William Clark was baptised at Fordingbridge in Hampshire in 1824, the son of Benjamin Clark and his wife mary Ann Rickets. The Clark family lived at Godshill in the New Forest.William was tried at Southampton in July 1844. Found quilty of housebreaking and stealing 22 pound he was sentenced to transportation for ten years. He embarked on the Sir Robert Peel in September 1844 arriving here over three months later on boxing Day."
