Eliphas's Links
Endyrion is a former schoolmate of Eliphas. During their schooldays, he was always much closer to Endyrion's sister Ilya, which clearly upset the other wizard quite a bit. Other than that, he had little interaction with him and hardly ever gives him any thought.
Eliphas is a former schoolmate of Endyrion. In their youth, he absolutely hated the other wizard -- where Endyrion failed, Eliphas frequently excelled, and he was always quick to try to sabotage Eli's friendship with his sister. While he certainly understands the breadth of Eliphas' power and knowledge, he will refuse to acknowledge it if he can help it. He believes Eliphas to be his rival.