My Kintner family name was originally Gintner, andthe German "G" appeared to look like the English letter "K" and thus the change in spelling.
They came from a small village called Erbach, which was SW of Ulm, in the Wurttemburg area of Germany and they referred to the area as the Schwabische area.
I know nothing about German history so I haven't done much research and only know of information others have found, or from the family story that was passed down.
I am not knoweledeable on the early counties of PA or their boundaries. I do know that my Kintner's were in Bucks Co, ca 1710-1740; and they were also in what was Frederick Co., MD, Rockingham and Augusta Counties in VA and at one time this was all part of the VA territory and later part of the PENN land grants.
The original Kintner land grants for Washington Co. PA are in the state archives in Harrisburg. Not sure which family member 'donated' them; but they are signed by men who were later Presidents Madison and Monroe
It seems my German family were found of the same names; Johannes George, Hans Michael, as well as Andrew, Christian, Jacob, Valentine, Conrad and Rudolph.
Makes for a lot of confusion as they named their sons first after themselves, then the next son after paternal grandfather, then the next son after maternal grandfather, and any other sons names after the birth fathers brothers.
I have came across many of the same spellings of the name as you have and it does add interest doesnt it? LOL
I wonder if the name has some significant meaning or origin, as they could be the same families, just different branches? Of course, the German immigrants tended to settle with those other German families already settled.
For both of the families were in the same general areas and may well have even know each other.