The Legio I Maximiana (of Maximian) was a comitatensis Roman legion, probably created by Emperor Diocletian in 296 or 297 AD.
[1] The I Maximiana was formed together with II Flavia Constantia, to garrison the newly created province Thebaidos, in Aegyptus.
[1] Since no Legio I Maximiana is listed as being stationed at Thebes in the Notitia Dignitatum, the designation is interpreted more broadly as of the Thebaid in general.
According to that tradition, this (Prima Maximiana Thebanorum) was a legion from Thebes that was ordered to move by Maximian.
However, according to tradition, the Theban Legion of Saint Maurice was martyred in 286, while the I Maximiana was not founded until ten years later.