This is a diffrent Zachariah Busby in Jasper co. Miss on the 1850 census. Census list his age as 53 born in SC which means he would be born in 1797. This Zachariah Busby moved from Lincoln co. Ten. He is on the 1830 Lincoln co. Ten.census living next to a David Busby who moved to Marchall co. Ala 1850 census which sais he is born in 1799 in SC. And Zachariah is also living next to a Phillip Busby on the 1830 Lincoln co . Ten census. They are probably all brothers from SC.