There were 4, African American "Lewis" men, who served in the Revolutionary War and were from Virginia.

LEWIS, AMBROSE, Spotsylvania Co., NARA: S36041 Va., VNSS:39-40

LEWIS, CHARLES, Spotsylvania Co., NARA: S36041 vA., RRRV, RWBL

LEWIS, BLACK, Lead miner, former slave of Robert Langley (1779-1783)

JCSV1:191, APALM

LEWIS, BLACK, M853:102:2,9,35,53,54,61,64-67,74,86

You may want add Charles to the Rev. War Patriots list and check out the other two.