I was running through WW and got aggroed by Melalafen so I killed him knowing that there was a chance to get the Torn burnt book for my pally. I didn't get that but I did get a couple of Orbs of Tishan, 3 sachels, some spells etc. I was too concerned with getting out of there and getting alts up to loot the lore satchels so by the time I logged back in and noticed the crook I had no way to tell that it dropped from him (and I'd turned my log off). However I know that I didn't kill Gorenaire or Naggy so it seems a definite possibility rather than whatever random no-name mobs I had killed - and it was next to the orbs in one of my bags.