As a follow-up to my Fiery Defender write-up, I'm now working on a SoulFire guide. Again, I'd appreciate any help you could provide in filling in missing text or pointing me towards quest NPC's with lore material I'm missing. You can find the write-up here:
http://www.gamesnet.org/KyrosKrane/Paladin/SoulFire/
Coming soon: a Fiery Avenger lore guide.