I'm going to make a wild guess. James Henry Sneed's (whose wife, Lydia, died in the fire) grandparents were John T. and Sarah (or Sally) Foley Snead. I think there is a possibility of brothers marrying sisters. John T. was born in VA c. 1814. Sarah was born in VA c. 1823. Don't know when or where they got married. I only know that their son Wiley Everett Sneed was born in Raleigh Co., WV (then VA).