a goblin raider [ Mistaken for "goblin raider" ]  

I don't think "a goblin raider" exists. I think it is only called "goblin raider" which is already listed separately.
There are no mobs in Kunark Frontier Mountains named "a goblin raider" on track, while there are several named "goblin raider".

If a goblin raider did exist, the faction would be "Inhabitants of Firiona Vie", not "Firiona Vie".

Upon death, it gave the following factions:

Goblins of Cleaving Tooth has got worse
Legion of Cabilis has got better
Firiona Vie has got better
Goblins of Mountain Death has got worse