Current hypothesis: Isaac O. Rockwell married ca. 1874. His wife died in 1875 while giving birth to their only child Jonathan. As Isaac was a poor laborer, he gave the child to his brother, the child's namesake, to raise. Thus, we find the household of Jonathan B. and Sophronia Rockwell in the 1880 census, with 5-year-old nephew Jonathan in the household. What became of Jonathan after this is the big question.
J. Brian Rockwell of Jefferson City, Missouri, has e-mailed me with an intriguing possibility: perhaps Jonathan was his ancestor, John Lloyd Rockwell (1875�1950). According to family reports, this John was born in 1875, losing his mother in childbirth and his father a few years after. The mother was Anna or Hannah Lloyd, the father unknown. While the name is different from Jonathan, the time, place, and circumstances fit quite well. Evidence for this identification would be some record that a Jonathan Rockwell changed his name to John Lloyd Rockwell, or record of Isaac�s wife being born in England, especially if her name was Anna or Hannah. Interestingly, the only Chemung County family named �Lloyd� in the 1870 census was that of an English immigrant, George H. �Loyd� of Elmira, aged 54 years. The household includes 33-year-old Anna, born in Pennsylvania. In 1880, George Loyd was called 62, blind, and living in the county poor house in Horseheads. I found no probate records for him.