I'd really like to know where you get your information? I must once again refute some of your statements. You say Sarah Ellen Hill was married to Joseph Alexander Irby and that she was from Hardeman County Tennessee. The Alcorn County Mississippi census of 1880 shows Sarah as wife of Joseph and that she was born in Alabama. I have her last name as Evans.
Also, I have January 11,1844 as Joseph's birthday. And his mother's name was Jane B. Henry.
If you have documents to prove your statements please share. I have gotten some of my data from census records and some from Eldon E. Irby a distant cousin who researched the Irby name for over 25 years.
I welcome your answers.