The Dunlendings are obscure... We may also use Ulfang, Bór, or a even more obscure leader from the HoMEs (he appears in a text called Tal-Elmar, that narrates the coming of the Númenoreans from the point of view of the Dunlendings, and was the base of a considerable part of my text), whose name I don't remember. But Freca was a quite important leader of the Third Age, thought his people was one of the less important of ME.