Also the mighty men of the armies: Asahel the brother of Joab, Elhanan the son of Dodo of Bethlehem,
Beginning with  1 Chronicles 11:41b, sixteen other names are listed.  These could have been others associated at one time or another with the "thirty"; or the Chronicler may have added them to emphasize the representatives of trans-Jordan who aided the cause of David.  There are many such questions which shall remain unanswered.