Board Thread:Lore Discussion/@comment-77.172.125.107-20130901100104/@comment-3539474-20130921002543

Dovahsebrom wrote: Yes I know that the Forsworn wasn't formed until after the Markarth Incident, I was referring to him saying that the Red Eagle was the milestone in which Reachmen started forming Hagraven Cults.

The Forsworn does worship Hagravens, which obviously have some role in the Old Gods religion (the Old Gods are Daedra if you didn't know that). They worship both Aedra & Daedra, like the Khajiiti pantheon.