According to Bert McVey, there was a direct link to Benjamin Rush family. This has been researched, but not verified. Possibly the link was through this person. The family tree produced by Bert (Families ƒ/McVey/Berts Family Tree) shows that it might have been through Pa Cambell There is a separate file on the Benjamin Rush family in ‘Reunion Documents’. It was last researched in March 2006 using the Roots Web search page. There were 60 trees listed at that time. Many of the more extensive trees are saved in the folder - Benj Rush GEDCOM files.

Update Aug. 2018. Benjamin Rush is Rush-91 in Wikitree. With that page open, click on Rush-91 in upper-right. Fifth from the bottom, click on Relationship To Me. No relationship existed at this date.