Hope I don't confuse you, but here goes: James and Hannah Sudduth had several children, amongst them 2 sons, one named Lawrence(and wife Mary Groce) and one, James(and wife Nancy Ann Smart).
Lawrence and Mary had William.
James and Nancy had Parrum who married Jane Willis and they had Zadock. So Zadock and William are second cousins, right? On ancestry.com there's a person who has a short family tree on George E.She says he was born in 1824 in Georgia and died in 1879 in Hill, TX.