Re: George Washington Jamison 1802 Tennessee
You may want to check on the life of Mary Jemison whose family settled in Pennsylavina about 1743 who was captured by Indians after most of her family was massacred in the French and Indian War,1758.at Marsh Creek 10 mile NW of Gettysburg. She lived to the age of 90 an. there is a book on her life. She is also lister on Wickipidia.
Two brothers escaped to family in Virgia and one of the brothers, Thomas migrated to Tennessee about 1776, the name was apprently changed to Jamison perhaps through mispelling.
One of his sons was Hugh Black Jamison.