I have just found some information about two people known as Sinis and Sciron in a clever encyclopedia thing. I don't know if they have ever been brought up before, so I will put them here (it's related to the Greek hero Theseus).
When Theseus reached manhood, Aethra (his mother) sent him to Athens. On the journey he encountered many adventures. At the Isthmus of Corinth he killed Sinis, called the Pine Bender because he killed his victims by tearing them apart between two pine trees. Next Theseus dispatched the Crommyonian sow (or boar). Then from a cliff he flung the wicked Sciron, who had kicked his guests into the sea while they were washing his feet.
For those who don't know, Sinis and Sciron are two shades in Myth. Sinis is the shade that Alric fights in TFL during the 'Out of the Barrier' mission.
Sciron (I think) is a shade who 'belonged' to the Deceiver during TFL. You had to kill him to win the 'Seven Gates' mission.