This image represents the throne headdress and namesake of the Egyptian goddess Isis. The name Isis is the Greek derivative of the Egyptian name Aset, (or Auset), meaning throne or seat of authority.
To the ancient Egyptians, Isis was the embodiment of the earth, and divine right to rule was by her authority. Osiris reborn is often depicted as an infant on the lap of Isis, where she is the literal personification of a throne- a theme carried on in Christian art centuries after the Egyptian religion died out.
Isis with her throne head-dress