But you should have played off the role of your name, if you were going to use it. This desciption lends itself to some good possibilities for a character, I think.

Vortigern, the King

Vortigern may have come to power in Britain in the late 430s or early 440s (although some speculate that he was the ruler during the visit of St. Germanus of 429), possibly as "high-king." It is believed that Vortigern is not a name at all, but a title, meaning "over king." According to the available sources, Vortigern was a weak man of little character, possessing few redeeming personal qualities. It is hard to imagine that his ascent to power was by the acclaimation of the members of Britain's ruling council. It is, however, much easier to believe that he gained his throne by treachery and murder.