The Overlord is the player who rules the Province. While the Overlord does not own the entire Province, he has feudal rights. He can tax all the fiefs in the Province.

Bailiff ID: Who is running this fief. The owner may run it himself, but must spend at least 30 days in the fief, or may assign an NPC to do it full time. In either case, the player or NPC ID number appears here. Otherwise, fief management is in "Auto Mode." This means the local officials run it. This is known as "auto-bailiff" mode and maintains equilibrium, assuming there are no external disasters, like pillage or plague. Tax levels are raised only to a level that will provide sufficient income to keep key fief indicators (loyalty, keep, infrastructure, etc.) level. There is some surplus, but there is also a fair amount of graft, so you won't have much surplus from a fief run by the diligent, but larcenous, auto-bailiff.