The graphic differences in the writing of the prenomen and the nomen of the Second Intermediate Period kings Djedhetepra Dedmesu and Djedneferra Dedumes can be used to ascribe a document to one king or the other with a high degree of certainty. Once these attribution problems are solved, it is possible to establish more accurate dates for their reigns. It appears that they did not belong to the same dynasty and actually ruled very far apart from each other: Djedhetepra Dedmesu was probably one of the last kings of the 13th Dynasty while Djedneferra Dedumes has to be assigned to the mid-17th Dynasty, in quick succession to Nubkheperra Intef.