The problem with Canonfire is that very little on the site is actually canon. The point of the site was to keep Greyhawk alive by having the community add to the setting after WotC kinda gave up on it. I don't doubt the people on the forums are knowledgeable on the setting, but the articles are not of much use for canon.Canonfire! and their forums are a great source on Greyhawk information. Not the most active place, but there's a lot of members knowledgeable in Greyhawk lore there.