I think this William Blevins is a son of William Blevins, Sr., whose daughter Mary "Polly" married Matthew McClain, Jr. in 1809 in Ohio County, KY. I think William, Sr. is a son of Daniel Blevins. Both were shoemakers, among other things. I would like to find out as much as I can about William, Sr.'s line. I also have a family rumor that William, Sr.'s wife was part Native American, but I have nothing to confirm that.