John Johnson Revolutionary War soldier

What I do know:

DOB 1740 Virginia

DOD 1802 Elbert Co, Georgia

Wife: Catherine Daughter Mary (Polly)

Served under Col.Elijah Clark

Bounty grant for service 1824

What i need to know or where to look is was he ever living inWilkes Co, Ga?

What was his Rev. War service?

Regards

Mary Mixon