Hi Richard
We have a number of the American Crews lines represented in the DNA Project. You can see all the pedigrees on this page:
http://www.familytreedna.com/public/CruwysDNA/default.aspx?s...(You'll need to scroll down past Cruwys and Cruse to find the Crews lines.)
Does your Reuben fit into any of these trees?
Debbie Kennett
Group Administrator
Cruse/Cruwys/Crewes DNA Project