How far back did you wish to go? JW Yoke was my 4th great-granduncle, according to the relationship charts. His brother Elias was my 4th great-grandfather. Elias' son Isaac, who fought in the Civil War, was my 3rd great-grandfather.
John and Elias were sons of John Yock and Margaret Catherine Carpenter. That is as far back as I have, although there is speculation that the father of John Yock was Tobias Yoke.