 Von Beckerath's analysis relies on the hypothesis that Manetho's 16th Dynasty comprised minor rulers of the Nile Delta region, called lesser Hyksos, who served the great Hyksos kings of the 15th Dynasty such as Khyan and Apophis.For Manfred Bietak, the large number of attestations of Sheshi suggests that he was an important Hyksos ruler, yet his inclusion in the 15th Dynasty may be doubtful given the total absence of monuments attributable to him.Thus, Bietak concludes that Sheshi should be placed in a group of West Semitic rulers who coexisted with the 15th Dynasty, possibly as vassals or partly independently from it, and some of whom even bore the title of "Hyksos".