Mariamne: Mariamne is one of the women known to have traveled with Jesus and his followers. She is also known as Mary Magdalene. According to the “Acts of Philip” by Leucius Charinus, Mariamne was Philip’s sister. According to Church history Philip and Mariamne lived and taught the followers of Simon Magus, and Dositheos. They had all been followers of John the Baptist along with Jesus. The “Acts of Philip” reveal that Mariamne returned to Jerusalem. Her remains were found in Jerusalem in an ossuary inside the Jesus Family Tomb. One Nag Hammadi document is attributed to her teaching, the “Gospel of Mary.” (SGG)
Most scholars think the “Gospel of Mary” was written in the 2nd century. I think Basilidians who wanted to preserve what they knew about Mary’s teaching may have written it somewhere at the turn of the first century. They may have written the GPhil also.  Basilides was a student of both the Apostle Matthias and Glausius, Peter’s scribe, according to both Papias and Clement. We do not know when he was born but we do know he became teacher to Valentinus. This put Valentinus in a valid Apostolic lineage in regard to the secret teachings of Jesus and his followers.
Thanks to the work of G.R.S. Mead much of what we know about Gnostics is explained in his available works online at the NHL Archives. Mead has preserved some of the actual writings of Basilides, and Simon Magus. The central theme of both works are about aspects of the Sethian Aeonology. Mead even produces examples of Hebdomads related to Simon Magus. Mead never saw the Nag Hammadi collection as it is today.
The “Gospel of Mary” contains one Sethian specific term, Aeon. Any reference to the Aeonology pretty much makes the document Sethian-Valentinian Gnostic.
“In an Aeon I was released from a world, and in a Type from a type, and from the fetter of oblivion which is transient. From this time on will I attain to the rest of the time, of the season, of the Aeon, in silence.”
Jesus said, “Do not lay down any rules beyond what I appointed you, and do not give a Law like the lawgiver lest you be constrained by it.” (“Gospel of Mary, Ch.8)
There is only one possible source for knowing what Jesus laid down, and that is in the gospels and scriptures of the Naassenes and those later by Valentinians. To understand these documents requires a working knowledge of the Aeonology and how the Aeon-Monad becomes a working sequence that can turn into a good or evil Hebdomad, Ogdoad, etc.
The following is from the Naassene fragment and is one of the earliest Christian written works…
(Jesus says) “Through Æons universal will I make a Path; Through Mysteries all I’ll open up a Way!
And Forms of Gods will I display; The secrets of the Holy Path I will hand on…
And call them Gnosis.”
The secrets of the Holy Path are related directly to how Jesus is regarded divinity in the Aeonology, i.e. God or more correctly the Logos…
Logos; The term for Sethians and Valentinians can be synonymous with the Word of God as an emanation of truth, or as a reflection of man’s divine or Aeon form in the Pleroma. In both Sethian and Platonic Christian Gnosticism logos refers to a system of order, reason, and knowledge. Aristotle characterized logos as an examination of a premise using both inductive and deductive logic, i.e. checks and balances. The concept of truth in the Logos in Sethian Christianity is shown with the following algorithm used in Trivium Method logic. This principle is based upon a tripartite union where three roads meet to form one road, and where four roads or the tetrad meets in the center it forms a single point: (1st Premise/Monad A=C) (2nd Supporting Premise/Duad A=B = B=C) (Synthesis/Triad of A=B=C) = 1 Logos. (SGG-2014)
All Aeon emanations work by the principles of the above algorythm.