In a Latin copy of Manetho, written by Eratosthenes, a king named Biuris is placed at the date when Bikheris allegedly ruled.

The oldest possible source of royal name may come from an unfinished pyramid shaft at Zawyet el'Aryan.

He discovered several black ink inscriptions inside the shaft, some of which actually show a royal cartouche name.

[4] Alan B. Lloyd is convinced that the names Baka, Bakare, Baefra, Bauefra and Biuris are all identical to Manetho's Bikheris.

[2] This, in turn, is doubted by Kim Ryholt, who points out that the names Baefra and Bauefra contain no syllable that would phonetically fit "Bikheris".

[5] This view is strengthened by the fact that Bauefra is entitled in contemporary documents only as "king's son", which is the title of a prince, not that of a ruler.

It might be possible that prince Baka was meant to become king on the royal throne, but then he died unexpectedly during his coronation year, leaving an unfinished tomb shaft.

In support of this, they point out that it was already suspicious that king Djedefra broke with the family tradition of building royal tombs at Giza.

In fact, Djedefra had left the Giza necropolis in an attempt to found a new royal cemetery at Abu Rawash instead.

However, both authors chronologically misplace the kings completely since they give the succession Sneferu → Khufu → Khafre → Menkaure → Djedefre → Shepseskaf → Thamphthis; archaeological records however give the correct succession Sneferu → Khufu → Djedefre → Khafre → Menkaure → Shepseskaf.

The reason for the numerous misplacements of kings in Hellenistic documents may be caused by the ancient authors' erroneous idea that the three builders of the Giza pyramids (Khufu, Khafre and Menkaure) automatically must have been direct throne successors.

The Saqqara king list would therefore give the following succession: Khafre → Bikheris → Menkaure → Shepseskaf → Thamphthis → Nyuserrê → Userkaf.

If he is indeed identical to the archaeologically attested prince Baka, he might have been buried in the Unfinished Northern Pyramid of Zawyet el'Aryan.