More than likely the unidentified rider was only another drifter.
The Euphrates was crossed at Birejil (Til Barsip ?), or Jerablus (Carchemish?), or Tell Ahmar (unidentified), or Thapsacus.
Public knowledge noted the arrest resulted from yet another unidentified tip.
The casket has the mark of an unidentified Parisian goldsmith of the 15th century.
Other ringtail harriers, especially distant ones over the salt lake on the evening of 26th, remained unidentified.