The name “Neferkara I” appears only in the Abydos King list. The royal canon of Turin lists a king's name which is disputed for its uncertain reading. Egyptologists such as Alan H. Gardiner read “Aaka”, whilst other Egyptologists, such as Jürgen von Beckerath, read “Neferka”. Both kinglists describe Neferkara I as the immediate successor of king Senedj and as the predecessor of king Neferkasokar.
Identity
There is no contemporary name source for this king and no Horus name could be connected to Neferkara I up to this day. In contrast, Egyptologists such as Kim Ryholt believe that Neferkara/Neferka was identical with a sparsely attested king named Sneferka, which is also thought to be a name used by king Qa'a for a short time only. Ryholt thinks that Ramesside scribes misleadingly added the symbol of the sun to the name “neferka”, ignoring the fact that the sun itself was no object of divine adoration yet during the 2nd dynasty. For a comparison he points to cartouche names such as Neferkara II from the kinglist of Abydos and Nebkara I from the Sakkara table. The ancient Greekhistorian Manetho called Neferkara I “Népherchêres” and reported that during this king's rulership “the Nile was flowing with honey for eleven days”. Egyptologists think that this collocation was meant to show that the realm was flourishing under king Nephercheres.
Reign
Egyptologists such as Wolfgang Helck, Nicolas Grimal, Hermann Alexander Schlögl and Francesco Tiradritti believe that king Nynetjer, the third ruler of second dynasty, left a realm that was suffering from an overly complex state administration and that Ninetjer decided to split Egypt to leave it to his two sons who would rule two separate kingdoms, in the hope that the two rulers could better administer the states. In contrast, Egyptologists such as Barbara Bell believe that an economic catastrophe like a famine or a long lasting drought affected Egypt. Therefore, to address the problem of feeding the Egyptian population, Ninetjer split the realm and his successors founded two independent realms, until the famine came to an end. Bell points to the inscriptions of the Palermo stone, where, in her opinion, the records of the annual Nile floods show constantly low levels during this period. Bell's theory is refuted today by Egyptologists such as Stephan Seidlmayer, who corrected Bell's calculations. Seidlmayer has shown that the annual Nile floods were at usual levels at Ninetjer's time up to the period of the Old Kingdom. Bell had overlooked, that the heights of the Nile floods in the Palermo stone inscription only takes the measurements of the nilometers around Memphis into account, but not elsewhere in Egypt. Any long-lasting drought can therefore be excluded. It is a commonly accepted theory, that Neferkara I had to share his throne with another ruler. It is just unclear yet, with whom. Later kinglists such as the Sakkara list and the Turin canon list the kings Neferkasokar and Hudjefa I as immediate successors. The Abydos list skips all these three rulers and name a king Djadjay. If Egypt was already divided when Neferkara I gained the throne, kings like Sekhemib and Peribsen would have ruled Upper Egypt, whilst Neferkara I and his successors would have ruled Lower Egypt. The division of Egypt was brought to an end by king Khasekhemwy.