The Coven of Namira is a group of cannibals dedicated to the worship of the Daedric Prince Namira. The Coven has existed since the dawn of time throughout Tamriel. By the Fourth Era, the Skyrim chapter of the Coven came under the leadership of a Breton mage called Eola.
The Coven's members convene within the bowels of Reachcliff Cave for their rituals and dinner sessions, where a sacrificial altar dedicated to Namira is located.