I have the following information on an Amos family that migrated from Virginia to Stokes County, N.C. before 1830. John, Latney and Washington Amos are listed in the 1840 census. They and their father, Francis are in the 1830 census. Francis was from Goochland County, Va. and was born in 1773. His father, also named Francis was born in 1736. His father, also Francis was born in 1706. His father, thankfully not Francis but Valentine was died in 1731 in Goochland County.
I hope this will tie into your cousin Sandra`s information. If it does I can elaborate some.
Incidently this is not my family tree , I gathered this information along with info about my line. At one time in the late 1700`s there were 5 Francis Amos`s living in Virginia. You can e-mail me at firstname.lastname@example.org