Is there any chance that your relative was enumerated more than once in a census? People who moved around census time, were working a distance from home, were in school, etc. might have been listed on more than once census page? My grandmother was listed with her parents and the household where she was a "hired girl" in 1930. Her brother had moved sometime close to the census date and he and his wife are enumerated in their hometown and the town where he had moved to work.