There is something funny going on with the Goodmans. In 1880 Hawkins County there are several Goodman children living with other families in the same District as John and Mary Ann Lawson. My suspicion is that their parents died and they were orphaned. However, there doesn't appear to be any Goodman children in 1870 Hawkins who match the 1880 Goodman children. My first though is that they may be Hancock County Goodmans. There is a Mary Goodman living in Hancock in 1860 at the home of Alsey Gordon with a 1 year old William and a 12 year old Amanda Goodman. I don't know if those children match with the age of the William and Amanda at the Shanks residence.