The last ever to be built, this sun temple, known from inscriptions found in the tombs of its priests, is yet to be located.Menkauhor was buried in a small pyramid in Saqqara, which the Ancient Egyptians named Netjer-Isut Menkauhor, "The Divine Places of Menkauhor".The similarity of Khentykauhor's name to that of Menkauhor led the Egyptologists Miroslav Verner and Vivienne Callender to propose that the two are the same person, with Khentykauhor taking the name "Menkauhor" upon ascending the throne.This hypothesis is possibly contradicted by an inscription discovered in 2008 in the mastaba of Werkaure, the eldest son of an unnamed king. Beyond the construction of monuments, the only known activity dated to Menkauhor's reign is an expedition to the copper and turquoise mines in Sinai.Menkauhor ordered the construction of a sun temple, called the "Akhet-Ra", meaning "The Horizon of Ra".Menkauhor, whose name means "Eternal are the Kas of Horus", is the first pharaoh in 80 years whose name does not refer to the sun god Ra.Menkauhor may have been a son of Nyuserre Ini; indeed Nyuserre Ini is known to have fathered a prince Khentykauhor as shown by a relief mentioning the prince from the mortuary complex of queen Khentkaus II, the mother of Nyuserre Ini.
Nonetheless, Menkauhor's name is well attested in the names and titles of priests and officials of the Fifth Dynasty as well as in the names of the agricultural estates associated with his funerary cult.
In January 2015 the tomb of the "King's wife" and "King's mother", Khentkaus III, was discovered by a team of Czech archaeologists in the necropolis surrounding the pyramid of Neferefre in Abusir.
Based on the dating of the tombs surrounding Khuit's burial, Seipel argues that she lived during the mid-Fifth Dynasty.
However, Egyptologist Hartwig Altenmüller deems this hypothesis unlikely. Prague: Academy of Sciences of the Czech Republic, Oriental Institute.
Owing to the scarcity of artefacts and inscriptions relating to Menkauhor's reign, few of his activities are known.
Consequently, his familial relation to his predecessor and successor is unclear, and no offspring of his have been identified.