The limestone statue of Lugaldalu according to inscription the "King of Adab" - Lugaldalu devoted to E-shar, the temple of the main god of Adab ca 2500 BC. Lugaldalu, is not in the Sumerian king, is thought to be a governor of Adab in circa mid-3rd millennium BC. This may bef the 'deputy priest' statues placed in the temples according to the Sumerian beliefs.
See:
- Joan Aruz, Ronald Wallenfels, Art of the First Cities: The Third Millennium B.C. from the Mediterranean to the Indus, New Metropolitan Museum of Art, 2003, p. 63 - 64.