His only clear attestation is his coffin — Louvre E 3020 — now in France. His sarcophagus contained the corrected nomen of this king as well as his prenomen, Sekhemre-Heruhirmaat, "which was added in ink on the chest of the coffin." Little more is known concerning the reign of this king except that he was a short-lived successor of Nubkheperre Intef. The Danish EgyptologistKim Ryholt has argued that Sekhemre-Heruhirmaat Intef was possibly a co-regent of Nubkheperre Intef based on a block from Koptos, which preserves Ryholt observes that the length of the damaged cartouche would fit well with the long prenomen of Sekhemre-Heruhirmaat. Ryholt suggested that Sekhemre-Heruhirmaat Intef died prematurely and was buried in a royal coffin that initially belonged to Nubkheperre Intef; hence, Sekhemre-Heruhirmaat Intef did not enjoy an independent reign of his own. The British Egyptologist Aidan Dodson, however, criticises Ryholt's proposal that Sekhemre-Heruhirmaat Intef died during the reign of his predecessor and was buried in Sekhemre-Wepmaat Intef's original royal coffin. Dodson observes that the form of the name Intef written here and the added king's prenomen of Sekhemre-Heruhirmaat on this king's coffin was composed in an entirely different hand from the remaining texts on the coffin. Dodson also stresses that Dodson's previous explanation derives from his GM 120article where the author argues that Sekhemre-Heruhirmaat Intef was most probably a short-lived Theban king who died within months of his accession to power since the temple "scribes were probably still used to writing Inyotef in the manner of Nubkheperre , leading to the corrected mistake on the coffin ". This would also explain the modesty of Sekhemre-Heruhirmaat Intef's coffin, which lacked a royal uraeus and is stylistically similar to the clearly non-royal coffin of Kamose. Intef, hence, would not have had the time to create a proper royal coffin in his abbreviated reign. The prominent German Egyptologist Daniel Polz who rediscovered the tomb of the powerful17th Dynasty king Nubkheperre Intef at Dra' Abu el-Naga' in 2001 also places Sekhemre-Heruhirmaat Intef as a short-lived successor of this influential pharaoh in a 2007 book just prior to the accession of Senakhtenre Ahmose.