I noticed that you had a question mark for the surname of John Shows' wife Mary Nancy. I wanted to let you know that her name was Mary Nancy Robertson according to the lineage charts for the Shows family, contained by the Mississippi Genealogical society. Also, the name Norvell Robertson Shows indicates kinship with Norvell Robertson Sr., who was born before the American Revolution in Virginia. Norvell was a well-known Baptist preacher in both Georgia and Mississippi; so was his son of the same name. Norvell Sr. died in Covington County, Ms. He left an autobiography that is available at both the Mississippi State Archives and the Virginia State Library in Richmond. It contains a good deal of genealogical material.