However, Sihathor died within a year and Neferhotep I had to appoint his second brother Khaneferre Sobekhotep IV as junior coregent.

From Abydos are known several inscribed blocks attesting some building activities at the local temple[5] The vizier Neferkare Iymeru reports on one of his statues found at Karnak (Paris, Louvre A 125) that he built a canal and a house of millions of years for the king.

[8] He was perhaps buried at Abydos, where a huge tomb (compare: S10) naming a pharaoh Sobekhotep was found by Josef W. Wegner of the University of Pennsylvania just next to the funerary complex of Senusret III of the 12th Dynasty.

[9] Alternatively, N. Moeller and G. Marouard argue that the eastern Delta was ruled by the 15th Dynasty Hyksos king Khyan at the time of Sobekhotep IV.

Their argument, presented in a recently published article,[10] relies on the discovery of an important early 12th dynasty (Middle Kingdom) administrative building in Tell Edfu, Upper Egypt, which was continuously in use from the early Second Intermediate Period until it fell out of use during the 17th dynasty, when its remains were sealed up by a large silo court.

[11] As Moeller, Marouard and Ayers write: "These finds come from a secure and sealed archaeological context and open up new questions about the cultural and chronological evolution of the late Middle Kingdom and early Second Intermediate Period.

Porter notes that the seals of a pharaoh were used even long after his death, but also wonders whether Sobekhotep IV reigned much later and whether the early Thirteenth Dynasty was much longer than previously thought.

[16] The royal court is known from sources contemporaneous with Neferhotep I, providing evidence that Sobekhotep IV continued the politics of his brother in the administration.