There is a George Winn in Louisa - in 1870 (you didn't indicate when your George was alive).

Name: George Winn
Estimated Birth Year: abt 1845
Age in 1870: 25
Birthplace: Virginia
Home in 1870: Northern District, Louisa, Virginia
Family and neighbors: View Results
Race: Colored
Gender: Male
Value of real estate: View Image
Post Office: Fredericks Hall

He is listed as a farm laborer.

Denise