When Merlin disguises Uther to visit Igraine, he also makes Ulfius to be like Sir Brastius and himself to look like Jordans, both of the knights were close men to Gorlois. No further mention is made of him, so we could assume either the real Jordans was killed alongside his lord when they issued forth from Terrabil to attack Uther's camp or he did not gain favor with Uther which Brastius did, serving both Uther and later Arthur.