Jane, The only other thing would be that Charles, the brother or - half brother of Henry, if the father re-married as you had the thought that the father may have had a second marriage to a Sophia.
There were defnitely these two boys as I saw the will of this Charles from Elmstone, Hardwicke when he made it in 1843 and he left £100.00 to his brother Henrys two children.
With so many thanks for your help.
Lynn.