: Chris already mentioned it--in GURPS, Ravanna and The
: Lurker are listed as the other two Lords.
However, it (GURPS) also says that there were seven Fallen Lords (page 99, third paragraph, "Of the seven original Fallen Lords..."), so there's one left unknown. If Shiver and the Voiceless One are the same, then that leaves us back with the six we originally knew, and since the only prerelease name left for the Lurker is Bonesplitter, then the sixth, unknown fallen must be the Faceless Man.
Also note that the same paragraph mentioned above says two of the Fallen *disappeared* after Balor's death, not died; that one (presumably the Deceiver) is still in service to the Light; and four have died and are presumed still dead. So we've got the Deceiver, still in service to the Light; Shiver, the Watcher, Soulblighter, and one other all dead, and two still missing. (Though if Shiver and the Voiceless One are to be counted as one person, then there could be only three dead, or only one missing, depending on whether the Voiceless One is dead or missing).