Sobeknakht I is mainly known from two sources; the Juridical Stele and tomb inscriptions.
When Nebiriau became king, the Governorship of Nekhen was transferred from Kebsi to his brother Sobeknakht I.
The Juridical Stela documents the transfer of the Governorship of Nekhen from a certain Kebsi to a relative, Sobeknakht I, in Year 01 of king Nebiriau. Kebsi had inherited this office from his father Iymeru when the latter became vizier. Iymeru had in turn inherited it from his elder brother Aya junior, who died prematurely without children. Prior to this, Aya Junior had inherited the office from their father Aya who became vizier in Year 01 of Merhotepre.
He holds the titles king's son, royal sealer, overseer of a half-domain, Nomarch, Nomarch of Nekhen, Sobeknakht (sꜣ-nsw; ḫtmw-bjtj; jmj-rꜣ gs-pr; ḥꜣtj-ꜥ; ḥꜣtj-ꜥ n nḫb sbk-nḫt).[2]
At Kerma, a travertine receptacle/vessel.[3] naming the Nomarch of Nekhen, Sobeknakht (ḥꜣtj-ꜥ n nḫn sbk-nḫt).
Sobeknakht I is known from the inscriptions in the tomb of the Nomarch Sobeknakht II as the father of the latter.[4] Furthermore, from these inscriptions it is clear that the wife of Sobeknakht I was a woman with the title hereditary princess and the name Nofru. Only recently his tomb was identified at Elkab. The inscriptions in the tomb are only badly preserved, but the mentioning of a woman called Nofru and remains of titles typical for Nomarchs make the identification very likely.[5]
He holds the titles iripat, Nomarch, overseer of god's servants, Sobeknakht (jrj-pꜥt; ḥꜣtj-ꜥ; jmj-rꜣ ḥmw-nṯr sbk-nḫt)