The first mention of Witteric in history was as a conspirator with Sunna, the Arian bishop of Mérida, to reestablish Arianism in 589. While Sunna was sent into exile, it is unknown what happened to Witteric. In the spring of 602, Witteric was given command of the army with the job of expelling the Byzantines. However, when it came time to do so in the Spring of 603, Witteric instead led his troops against KingLiuva II, counting on the support of a faction of nobles in opposition to the dynasty of Leovigild. He invaded the royal palace and deposed the young king. Witteric cut off the king's right hand, and then had him condemned and executed in the summer of 603.
Reign
During his reign, the Visigoths fought the Byzantines. However, Isidore of Seville is dismissive of Witteric's accomplishments, writing that "although he frequently fought battles against the Roman soldiers, he did not win any adequate glory except for capturing some soldiers at Sagunto with the help of his generals." The campaign against Sagunto probably took place in 605. It was probably during his reign, as well, that Bigastrum was taken, as its bishop appears in a council of Toledo in 610. In the twelfth year of his reign, king Theodoric II sent for bishop Aridius of Lyons and the constable Eborin to ask Witteric for his daughter Ermenburga's hand in marriage. Although the envoys gave their word that she would not be disowned by Theodoric, and she was received by Theodoric in Chalon-sur-Saône, his grandmother, the regentBrunhilda and Theodoric's sister Teudila did not provide a welcoming reception. Theodoric then disgraced Ermenberga by sending her back without her dowry. Incensed, Witteric entered into a quadruple alliance with Theodobert II of Austrasia, Clotaire II of Neustria, and Agilulf of the Lombards to effect his deposition and death. Despite their mutual fear of Theodoric, their alliance did not accomplish anything; according to Fredegar, "Theodoric got wind of it but treated it with utter contempt.".
Assassination
In April 610, a faction of Catholic nobles conspired against Witteric and assassinated him during a banquet. His body was dragged ignominiously through the streets and he was later buried without the honors corresponding to his status. The nobles then proclaimed Gundemar, Duke of Narbonne, king.
