John Ross, William Hulse, Allen Parmer, Lee McMurtry, Glasscock, Payne Jones, Clark Hockensmith, Isaac Hall, Robert Hall, Dave Helton, J.B. Tooley, A.B. Southworth, C.H. Southworth, and Bud Pence. Frank James and a few of the others were at the house of Alexander Sayers when Quantrill was attacked at Wakefield. These are some I was able to find. Hope it helps.

Rose Mary Lankford
The Encyclopedia of Quantrill's Guerrillas
hickoryflatoutlaws@centurytel.net