Joseph Parker b. 1777 Virginia

I have discovered a Joseph Parker b. 1777 Virginia in 1830, 1840 and 1850 Boone County, Kentucky.His wife was a Martha M. [1769-1832].Children appear to have been born mostly in Virginia.I noticed on one tree, there was a Joseph Parker b. 1777 listed as a son of William Parker II in Charlotte County, Virginia, but they had no other details for their Joseph.Perhaps, they got the data from a bible record.This Joseph of Boone Co., KY, did name a daughter Charlotte. Suspected children are:George A., Frances "Angeline", Charlotte M., John F., and Catherine Amanda.These children appear to be born after 1800.However, I could not find George A., except he was bond on a marriage, unless its the one in Warren Co., IN in 1850, b. 1805 [he would seem to be the oldest].

While trying to find his [Joseph Parker] marriage in 1795-1805], I ruled out:Fauquier [Sally Lamkin - too old], Loudoun [Mary Idom], Halifax [Priscilla Allen], and Grayson [Elizabeth Denny/Rector] counties, VA.

Appears to be a different line than Richard Parker d. 1809 Boone Co., KY [m. Orange Co.,VA].

Any assistance is appreciated.