I have a Joseph Schoolfield, born 1803 in Guilford County, NC, to his parents John Schoolfield and Nancy Agness Rankin. He was the brother of my GGG-grandfather, Rankin Chambers Schoolfield, who was married to Sarah Cummins. Rankin and wife moved to Clay County, MO around 1837 after he received a land patent.
Have no other information about this Joseph. It would be great if he were the same as your Joseph Schoolfield.