I believe this is the same Ellis Sparks that was my grandmother's brother. Their father was Mathie Sparks and mother was Elizabeth (May) Sparks, though there were a couple of Sparks boys whose mother was Lucinda Lemasters, as Elizabeth died young and Mathie remarried.
I'm sorry, I don't have any specific information regarding this couple, but I do know some of the Sparks ancestry. I believe my grandmother (the oldest child) came into owning the old home place in Ivyton, but at some point she deeded it to Ellis. I could be wrong about this, but that's the story I always remember.
Other siblings to Ellis and Marshie were: Lizzie, Dicie, Berthie, Kelly, Edward, Donie, Bunis (died in childhood) and Virgil. It think that is all of them.