He represented the Seminole Nation in postwar negotiations as a Southern Treaty Commission Delegate and signed the Reconstruction Treaty of 1866 .
Brown served in the Confederate Army as an officer under the Seminole chief John Jumper .
Brown represented the Seminole Nation in postwar negotiations as a Southern Treaty Commission Delegate and signed the Reconstruction Treaty of 1866 .
Brown served in the Confederate Army as an officer under the Seminole chief John Jumper .