Don Esteban is the leader of the Bandit Camp.
- His wife is Rachel.
- He has one of the five Crystal Disc required to open the gate at the Volcano Keep.
If you are with the order he will give you the disc right away, but if you are with the bandits you first have to complete a quest for him to get it. If you joined the bandits you have to get permission to speak to him by gathering the five pieces of a sword. Then you have to speak to Oscar the smith, who will forge the sword for the Don. Then you have to give it to him, and pay 200 gold to get it back, or steal it back.
You don't actually have to give him the golden sword, but doing so gives you 1000 exp and the sword can't be sold anyway.