Comment on Chief Cornstalk: Shawnee Lineage by Andrea G.

My brother has been researching on ancestry.com and has discovered that Mary Sky may have been our great-grandmother, married to a Joseph Adkins I think? I live in Salt Rock, WV and don’t really remember hearing anything about having Indian heritage but that may be because nobody has researched it that far back. I am excited about the possibility of being a descendant of such an important and powerful man but also a little skeptical of anything found on ancestry.com. Here’s the line that I know for sure:
Andrea Glenn (me, Glenn is my married name)
Gary Walker, my father
Robert Walker, his father
Arnold Walker, Sr., my great grandfather
Elanor Ross, my great great grandmother and Arnold’s mother
Here’s what ancestry.com says:
Elanor’s parents were Elizabeth Adkins and Robert Ross
Elizabeth’s dad was Reuben Adkins
Reuben’s parents were Joseph Adkins and Sarah Sky Cornstalk
Sarah’s parents were Chief Cornstalk and Helizilkinopo Ounacona Snake Moytoy(?)
Can anyone give me any more information or verify any of this? Also, is there a chance that Mary Sky and Sarah Sky are the same person, or is Sarah possibly one of the children who weren’t documented? Any help would be greatly appreciated!!