Elsiurs

See also: Elven Council
Supports: 
Opposes: Renzel
Unknown person referred to in Council Record Fragment. Appears to oppose Renzel's faction - "am strongly opposed to the risks associated with Elsiurs’ report and proposed course of action."
This could be the same person as Eliezure, in which case the above quote could refer to the use of Undead to provide mana.
As one of the two Elves (Eliezure and Elsiurs) whose name we know starts with the letter 'E', it is possible that he was responsible for the warning in the Song of the Spheres