Constantius requested that the rolls of papyrus should be copied onto parchment or vellum in order that they would be preserved .
The library was established by Constantius II who was the son of the first Christian emperor Constantine .
Constantius II requested that the rolls of papyrus should be copied onto parchment or vellum in order that they would be preserved .
The library was established by Constantius II who was the son of the first Christian emperor Constantine .