I now suspect that the Tabitha who married Hezekiah Davidson was Tabitha Childers, daughter of Arbraham Childers and Lucy Thomas Neville (widow of James Neville). Tabitha apparently later married Gabriel B. Peasley, Senior (immediately after Hezekiah Davidson died in 1793), and Gabriel B. Peasley, Senior married Judith Davidson in 1809 (I assume that Tabitha had died by 1809). The interesting part of this is that Judith Davidson was the apparent granddaughter of Hezekiah and Tabitha (Judith was the daughter of Philemon Davidson and his wife Mary, so Mr. Peasley apparently married the granddaughter of his former wife)! In addition, Lucy Thomas Neville Childers had a son named James Thomas who married Elizabeth Childers, a daughter of Abraham Childers and this same Lucy. It is not clear if Lucy was a Thomas by birth or if she married a Mr. Thomas before she married Nr. Neville and Mr. Childers.
Gabriel B. Peasley apparently had three children with Tabitha (Lucy, William and Nancy), and at least two children with Judith Davidson (Mary and Gabriel B. Peasley, Junior). Lucy Peasley married my apparent 3rd ggf, Reubin F. Davidson.