The Order of the Silver Key
The Emerald Queen, Ozma, rules in the Emerald City in the center of OZ.She seems to be the final authority in disputes between the various other factions on the countryside.
The Witches rule the 4 cardinal directions.
Elpheba is the witch of the west. She is also a member of the Council of the Moon.
Glenda is the witch of the north.
Nessa is the witch of the east.
Candle is the witch of the south.