Hi,
I saw your posting and had to write. First of all I know Benson arizona well. I grew up in tucson and lived in bisbee for many years.
Any how, we share the Gillis family. My grandmother was catherine mcnabb Gillis, daughter of John Gillis and Nancy Robinson.
I just recently got some documents of hers . My mom is sending me her will and some other things.
Love to share info. if you like. i see you are looking for another side of the tree but it is still intersting.
sidnie