Thanks for posting the photographs.
>...Mary Mathews Harper. I don't know who she is, she may be Jabez Harper's mother.<
Jabez Harper's mother was Mary Jane Weedord. She was the daughter of Jabez Weedord.
Mary Ellen Matthews (the photo), is the wife of Robert Edwin Lee Harper, son of Jabez Clinton Harper and GeorgeAnna Alice Harper. GeorgeAnna was the dau. of William H. Harper and Nancy A. Munday.