some information regarding the rare named items.
Unique monsters that drop these items are:
Sandman : Sandmans Mirv (rocket gun - hunter)
Lady vengance : Sympathy (dart pistol - cabalist)
fatty tuby : Shauns trusty sidekick (cricekt bat - templar)
if i rememe right sandman and vengance can be found in the same place witch would be waterloo, and fatty tubby(not 100% sure about the name) can be found in st. martins