Shortly after Ishbi-Ura had established himself in Nîsin, we find another noble, who bore the Semitic name Naplanum, following his example, and founding an independent line of rulers in the neighbouring city of Larsa. But, in spite of the Semitic names borne by these two leaders and by the kings who succeeded them in their respective cities, it is clear that no great change took place in the character of the population. The commercial and administrative documents of the Nîsin period closely resemble those of the Dynasty of Ur, and evidently reflect an unbroken sequence in the course of the national life.[28] The great bulk of the southern Babylonians were still Sumerian, and we may regard the new dynasties both at Nîsin and Larsa as representing a comparatively small racial aristocracy, which by organizing the national forces in resistance to the Elamites, had succeeded in imposing their own rule upon the native population. At Nîsin the unbroken succession of five rulers is evidence of a settled state of affairs, and though Gimil-ilishu reigned for no more than ten years, his son and grandson, as well as his father, Ishbi-Ura, all had long reigns. At Larsa, too, we find Emisu and Samum, who succeeded Naplanum, the founder of the dynasty, each retaining the throne for more than a generation. It is probable that the Sumerians accepted their new rulers without question, and that the latter attempted to introduce no startling innovations into their system of administrative control. Of the two contemporaneous dynasties in Southern Babylonia, there is no doubt that Nîsin was the more important. Not only have we the direct evidence of the Nippur Kings' List that it was to Nîsin the hegemony passed from Ur,[29] but what votive texts and building-records have been recovered prove that its rulers extended their sway over other of the great cities of Sumer and Akkad. A fragmentary text of Idin-Dagan, the son and successor of Gimil-ilishu, found at Abû Habba, proves that Sippar acknowledged his authority,[30] and inscribed bricks of his own son Ishme-Dagan have been found in the south at Ur.[31]