I'm re-watching EW cutscenes and after the Hydaelyn duty she quotes "When the way forward is hidden from the mind's eye, look not to the Invocation, but within yourself". She claims these are the words of the original Azem.
Later on before the final Dungeon, Emet implores us to continue exploring, and consider it our duty as Azem "as he had". I might be reading too far into it, but does that mean Emet was an Azem before he took Emet's seat?
Who was the original Azem, and how many were there before us and Venat?