[1][2] Djefatnebti’s name appears in one single, black ink inscription on an earthen beer jar, which was excavated at the eastern corner of Elephantine.
The first one mentions the "year of the followers of Horus" and the foundation of a building which name is lost due to damage.
The third one contains the notation "The king of Upper- and Lower Egypt appears", a "3rd time of battling the robbers" and the death of Djefatnebti.
Egyptologist Günter Dreyer is convinced, that Djefatnebti was married to Huni, since no other king of the 3rd dynasty is proven to have ruled longer than 22 years.
His theory is not commonly accepted, though, because the ink inscription doesn't mention Huni by name.