Erishum I or Erišu(m) I (inscribed me-ri-šu, or mAPIN-ìš in later texts but always with an initial i in his own seal, inscriptions, and those of his immediate successors, “he has desired,”) c. 1905 BC — c. 1866 BC (short chronology) or c. 1974 BC — c. 1935 BC (middle chronology), son of Ilu-shuma, was the thirty-third ruler of Assyria to appear on the Assyrian King List. He reigned for forty years. One of two copies of the Assyrian King List which include him gives his reign length as only 30 years, but this contrasts with a complete list of his limmu, some 40, which are extant from tablets recovered at Karum Kanesh. He had titled himself both as, "Ashur is king, Erishum I is vice-regent" and the, “Išši’ak Aššur”ki (“steward of Assur”), at a time when Assur was controlled by an oligarchy o