Three pharaohs that are barely attested to by any artifacts, follow Sened. Nubnefer is one of them, attested to only by a few fragments found in the detritus near the Step Pyramid of Djoser. The name is presented with royal titles, and so is assumed to be for a pharaoh. Like Sened, he may have ruled only a portion of Egypt, and his name in a serekh (the "eureka!" of kingship), has not been found.

His horus name has not been found in a serekh, and the fragmentary bits of his name that have been found have been read both ways -- Nubnefer and Nefernub.

Nothing is mentioned of him in any king list, and if he was indeed a pharaoh at all, it was for a very short time. He has been placed near Ninetjer by the egyptologist Helck, but others do not support this finding. Others match Nubnefer with the king Khaires from Manetho, although a rule of 17 years as specified by Manetho seems very unlikely.

Of course, a plausible explanation for finding his name in the proper "kingly" format is that Nubnefer is the Nesu-Bity name of king Reneb (who preceeded Ninetjer) and not a distinct person at all.

No tomb has been found, although it is probably left beneath the sands of Saqqara near the other 2nd Dynasty pharaohs.

pharaohs

Hetepsekhemwy
Reneb (Nebre)
Weneg
Ninetjer
Sened
Nubnefer
Neferkare
Neferkaseker
Hudjefa I
Peribsen-Sekhemib
Khasekhemwy