I see what you are saying and I agree. There was a woman who tried once and came up with a family, but I don't know how you would check and how it would lead to my Charles Johnson.
Osterberg was an orphan John Edward Johnson Osterberg with his aunt to MN. in 1869 which is one of the imm dates listed on the census.
Other than that I don't know of anything else unless he was related to his wife and I am not looking that direction. I will still be checking this direction. Rita