Location of this quest NPC is in Temple of Marr basement at 1607, -1637, -195. Found when doing a Pally quest Marr's Ring for faction.
Finnyiniel

Located in the Temple of Marr basement.
Armguards of the Shin Initiate
Blade of the Shin Initiate
Boots of the Shin Initiate
Bracer of the Shin Initiate
Breastplate of the Shin Initiate
Gauntlets of the Shin Initiate
Greaves of the Shin Initiate
Helm of the Shin Initiate