I have no experience with the 1821 census, but ages are often rough approximations in the 1901. Was the missing boy in 1821 old enough to have been sent to live with another family as an apprentice or helper of some sort? In my family a young boy was sent to live with relatives who had no children, and I think that was fairly common. Diane

Thanks, Diane, for the reply. The children's ages in this census are 1, 2, and 3. Everything else in this census matches except this 3 year old child being a girl instead of a boy. Elaine