Amazing ShaunJ sad but you found him.

Would it be likely that his wife Sophia went with him "the Indies"
I have checked the BMD for England and there is no marriage or death that fits for Sophia TUCKWELL after 1865 so perhaps she remarried in "the indies" or also died there.
There is a birth Charlotte Sophia TUCKWELL in 1855 in Westminster which I think could possible be a child of Samuel's and Sophia's.
Thanks Leonie