I do have names and dates for Benjamin Lemley's siblings and parents. My research data does identify his ancestors backwards for 5 generations, to John Lemley Sr.
I have tried to assemble as much information possible listing many of the descendants of John Lemley Sr. his 5 sons and 2 daughters. I am using PAF 5, so I can create a GEDCOM to share my research.
You may contact me directly at firstname.lastname@example.org