Beniosus

In the Icelandic Saga af Tristram ok Ísodd, a king who managed to wrest control of Spain (Tristan's homeland) during the chaos that followed the defeat of Biríng, Tristan's foster-father, at the hands of King Turnes of Africa.

Tristan eventually defeated Beniosus and his companions, Earls Hríngr and Siguròr, and re-conquered Spain.