Guild

Creating a Guild
Creating a guild requires a party of five players at level five or above. The leader of the party also must pay 1 gold.The members of the starting party do not have to agree to forming the guild, but must not already be in a guild.Once the guild is formed only the guild leader is required to keep it up.

Only people of your own faction can join your guild. However Pirates (being their own faction) can come together to form a guild regardless of their native faction.