I don't know if others confirmed this fact in the past or not, but I will post it in case it helps others. While looking at Virginia land deeds, I stumbled upon something that confirms what we had suspected in the past.
Page 254 1796 Abraham Lock buys 100 acres in Wythe County Virginia. on the White Oak Branch water of Clinch River
In the past, we assumed this was Abraham Lock son of Samuel Lock, but couldn't be 100% sure because there was a 2nd Abraham Lock in the area.
Page 487 & 488 is a deed for William Whitton, in his deed it mentions his land is ajoining Abraham Lock's land , heir at law of Samuel Lock. So we now have confirmation the Abraham Lock of Wythe County Virginia is one and the same Abraham Lock son of Samuel Lock of Washington County and Montgomery County Virginia.
This Abraham Lock was in Lee County Virginia and then on to Harlan County Kentucky by 1810