Please check the 1850 Pittsy Co censuses that are available on line....having no approx age,for YOUR David, there are 3 possibilities.....page 195A Jesse Dalton 38 with son David 8 yrs, page 195A Booker Dalton 40, son David 13, page 195B Samuel Dalton 43 son David 5. Census records are one of the mainstays and should be the first thing you look for. Hope this helps.....Margie Brown