He himself retreated to Mérida.[4] The date of the other major revolt cannot be arrived at precisely. Either at the commencement of his reign (549) or as late as 551, a nobleman named Athanagild took Seville, capital of Baetica, and presumed to rule as king in opposition to Agila. Exactly who approached the Byzantines for assistance and when is also disputed; the primary sources are divided.[5] Even the name of the general of the Byzantine army is disputed.