;Contemporary attestations The reign of Djedkheperew is supported by eleven seal impressions from Egyptian fortresses at the
second cataract in
Nubia. Ten of these seal impressions were found at
Uronarti in close association with seal impressions of
Sekhemrekhutawy Khabaw and
Maaibre Sheshi. The last one was discovered in
Mirgissa. Besides the seal impressions, Djedkheperew is authenticated by the
Bed of Osiris, a massive sculpture of black
basalt showing Osiris lying on a bier. The
Bed of Osiris was found in the tomb of the
1st Dynasty pharaoh
Djer, which the ancient Egyptians had come to identify with the tomb of
Osiris. The sculpture is now in the
Egyptian Museum. The sculpture was tentatively attributed to another 13th Dynasty pharaoh,
Khendjer, by Leahy, but recent examinations of the inscriptions proved that it originally bore the name of Djedkheperew. The nomen of Djedkheperew was erased at some point in antiquity, but carelessly enough that some of it is still readable. ;On the Turin canon Djedkheperew is not mentioned on the
Turin canon, a king list compiled in the early
Ramesside period, which serves as a reference document for the history of the Second Intermediate Period. Ryholt argues that this is because Djedkheperew's reign (as well as that of his predecessor, Sekhemrekhutawy Khabaw and immediate successor(s)
Sebkay, all absent from the canon) was already lost in a lacuna of the document from which the canon was copied. That this must be true is indicated by artifacts showing that Khabaw succeeded Hor on the throne and Sebkay as a predecessor(s) of
Amenemhat VII, when the canon lists Amenemhat VII directly as Hor's successor (column 7, lines 17 and 18). ==Family and reign==