There is no certain evidence from Egypt that this name was in existence until the XXIInd Dynasty, about 950 BC. But names of the Hyksos period, and, indeed, any kind of Hyksos inscriptions, are so scarce on account of the destruction of Hyksos monuments by the Egyptians of later times that the absence of such names is really no evidence on the subject. The fact that this name has not been discovered earlier than 950 BC does not give any warrant for the claim that the narrative is of a late date.
M. G. Kyle
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