Actually the 1850 Census states this:
Anderson Tinch 39 Va
Sally 35 SC
Jackson 1 Tn
Geo Blakely 10 Tn
Henry Blakely 9 Tn
I would imagine that George and Henry lost their parents and Anderson took them in. No relationship at all to Anderson. Anderson had two sisters Nancy who married a Norman and Mary who married a Ringley (I believe). And on half sister Polly/Mary who never married.
Need anymore information I will be glad to help. I am related through Anderson's sister Nancy.
Jackie Webb
webbjl60@gmail.com