The title ummi šari ("Mother of the King") is attested first under Sargon's successor Sennacherib (r. 705–681 BC), and might best be understood as equating to the position of Queen mother, i.e. a former queen who was also the mother of the current king.[8] The ummi šari could retain a prominent position for life; Naqi'a, wife of Sennacherib and mother of his successor Esarhaddon (r. 681–669 BC), was still attested with the title of ummi šari in the reign of her grandson Ashurbanipal (r. 669–631 BC), despite no longer being the mother of the reigning king.[9]