I'm looking for a James Porterfield from Augusta County, Virginia. He was supposedly the father of John Watson Porterfield (1855-1929), Charles G. Porterfield (1859-1916), and Robert Lee Porterfield (1869-1930). Their mother was Martha Ann Thurston Porterfield (1835-1885). I've found a James R. Porterfield (born 1839) in the 1850 census living with Sarah A. Porterfield (born 1823) and Sarah Mills (born 1826). Does anyone have a clue as to who this family is?