Hi Koromo,
I do have a 'loose' Henry Lewis, but now I can see that the one you are looking for is not the same one as mine. I have been searching for the parents or siblings of a Henry Lewis for 9 years. I believe he was born between 1810 and 1814. Disappointed we don't seem to have a connection.... I think you might have posted some information attached to my Henry Andrew Lewis m. Mary Prosser on Family Tree? Three of the children that were attributed to that Henry were incorrect, as he emigrated to Pennsylvania in 1844 and was a miner. Also, on the 1841 census, my Henry is with his wife, Mary, rather than his mother. This does help us both in one way though; it eliminates John and Margaret as the parents of my Henry and eliminates Henry Andrew Lewis on FamilySearch, father of Thomas, Phoebe, Henry, William, Sarah, Elizabeth and Hannah as your Henry. I have a giant folder devoted to research on Henry Lewis.... if I find one born 1819 I will be in touch. If in your research you find a Henry b. 1810-1814 let me know!