According to the account in Charles Bracelen Flood's book "Lee the Last Years": As the surrender terms were being copied in a final draft (by Leieutenant Colonel Ely S. Parker, Grant's military secretary), with Lieutenant Colonel Marshall of Lee's staff simultaneously writing an acceptance, Grant introduced his officers who had been standing along the walls during these historic moments....

Parker was a seneca Indian, chief of his tribe.

Flood goes on to write that:

"A few minutes later, Lee signed the letter in which he accepted Grant's terms for the surrender of the Army of Northern Virginia. Lieutenant Colonel Marshal took it from Lee and handed it to Lieutenant Colonel Parker, who gave Marshall Grant's signed letter setting forth the surrender terms. Thus it was that the two men who exchanged the documents that ended the fighting were a grandson of Chief Justice John Marshall, who in civilian life had been a lawyer in Baltimore, and an Indian chief who had studied to be a lawyer and was refused admission to the bar because of his race."

I hope this helps.

Randy Woolley