Hagraven

Named hagravens

 * Moira
 * Drascua
 * Melka
 * Petra

Glenmoril Witch
The Glenmoril Witches are residents of Glenmoril Coven. There are 5 of them in total and their coven was responsible for giving The Companions the Beast Blood. They were eventually wiped out by the Dragonborn who took their heads as a cure for lycanthropy.

The Ceremony
To become a hagraven, witches must get a living sacrifice. This can be seen by doing the quest set out by Illia once you enter a hagraven cult's hideout. During the quest you get a special staff.

Hexenrabe