Perhaps I buried the main point in too much detail. My gr gr grandparents, George (1791-1866)and Rebecca MettsFronk(1796-1870) had 9 children. They and their descendents did not migrate to KY that I am aware of. Geo and Rebecca moved to Ohio in the 1850's, first to Unity Twp, Columbiana County, then later to Patmos in Mahoning County. They are buried in Hope Cemetery, Salem Ohio in the same site as their 2nd son, George W. Fronk (1829-1905). The oldest son, Solomon (1816-1896) and family remained in Beaver County. A 3rd son, John W. Fronk(1833-1901) is buried in Columbiana Co - E. Palestine. Solomon and John might have had offspring that carried on their lines, but I did not find it after modest searching. 1791 Georges 6 daughters all married and at least 4 moved to Columbiana Co. One reamined in Beaver Co. I have names and dates of all 6.
The children of 1829 Geo W Fronk are a daughter who died at 4, another daughter who had no children, son, Seth (1864-1911) who had 2 daughters, that had no chidren; and a second son, John Franklin (1870-1956), my grandfather. John F is buried in Salem, along with his only son, George R. (1904-1999). 1904 George had 2 boys, Robert, who lives in Boston, and me, William, of Michigan and Tennessee. A daughter lives in Cleveland. I have a son who lives at the other end of TN, and he has 2 sons.
Forgive the detail, but I hope it is helpful to you, and possibly you might see some tie to you ancestors. I am sure you know there are lots of Frank/Fronk names in PA in the early 19th century, and they liked the name George and Jacob especially. Maybe there might be a tie to earlier generations. Let me know if I can elaborate on any of above. Good luck in your searches.