I just recently got really into the lore of wow after playing forever. Is it possible that before the jailer was banished that he was the true eternal one for revendrath and not sire?
That would make the Dreadlords into the Souls he sired into new Bodies and the Venthyr being the Souls that Sire Denathrius sired into new Bodies…
It leads to Questions on who or what was running Torghast when Sire Zovaal was running Revendreth!
Incidentally the fact that the Archon calls Denathrius brother means that if Zovaal was the Sire of Revendreth then whoever ran Bastion before the Archon was murdered by Zovaal as likely as not!..or had faked his/her death and is the Man Behind the Man.