Cinvortrix of the Hounds of the Horned One was a Fianna Garou. In 57 BC, he and Elim of the Fierce Ones battled for the high kingship of Tara. Elim won and proclaimed himself Ard Righ or high king of all the Fianna, although this claim was not be recognized by most Fianna outside of Ireland for some time.[1][2]