Mary Harris was my 5g aunt. Her sister Ellen Harris Hickey was my 5G grandmother. There is no family history associated with Mother Jones at all; when I was contacted by a researcher several years ago wanting family history, I was unable to provide any information. I have a feeling they did not talk about her as she was an infamous black sheep of the family, that side of my family was VERY conventional.
I have a photo of my 5g grandmother if you are interested.