I am not sure that I can help you with specific information regarding John B. and Martha A. (NEWBERRY) EUBANKS, but I may be able to help you with one of their children.
According to my information, William Nehemiah EUBANKS was married to Maggie Eva LOGGINS. Maggie is not of my direct LOGGINS line (see message #66), but she is a descendant of a collateral line springing from my GGGgrandfather, Daniel LOGGINS. Her parents were James Nathaniel and Mary Jane (ALLEN) LOGGINS.
The information that I have for William and Maggie is very sketchy. They had at least five children and Maggie eventually relocated to Dallas and remarried. I would be happy to share more if you are interested. Feel free to eMail me.