Who is Aaron Dwight Stevens and Stewart Taylor from Flashman & the Angel of the Lord: From the Flashman Papers, 1858-59 and what is their importance? "Flashman_&_the_Angel_of_the_Lord:_From_the_Flashman_Papers

Aaron Dwight Stevens and Stewart Taylor are John Brown's man. Stevens and Taylor are close friends and spiritualists. Taylor accurately predicted that he would dead by Christmas. Stevens, who was dispatched to arrest Colonel Washington, was shot in the belly under a white flag. He survived the injury, but he was hung shortly after Brown.