How is it that we have 2 other Servants using Durandal, who both use it only "through technicality" and among those one doesn't even have an English Wikipedia page, then we have 2 minor characters from Orlando Innamorato which is just a spinoff of the core Matter of France as full Servants, yet we don't have Roland the title character as a full Servant?

(Yes I know he has a design, but I'm talking Full Servant.)