The order of rulers for this dynasty is established by the Turin Royal Canon and is widely accepted, except for the first five rulers, which are given below after Ryholt. The names of these rulers is not given on the Turin Canon, except possibly for one, and Ryholt proposes that they were mentioned as "wsf" in the list, which denotes a lacuna in the original document from which the list was copied in the Ramesside period. Rather, Ryholt identifies the first five kings thanks to a seriation of their seals. His conclusions are debated however in Ben Tor's study of the strata levels in which seals attributed to the first five kings have been found. Ben Tor concludes that Sheshi's, 'Ammu's and Yakbim's reigns date to the second half of the Hyksos 15th dynasty and are not contemporary with the 13th dynasty. Thus according to Ben Tor, these kings were most likely minor vassal rulers of the Hyksos kings reigning in the Nile Delta.