The council was hosted by Bishop Montanus of Toledo on the 16th day before the Kalends of June (that is May 17th) in the fifth year of the reign of Amalaric, in the year 565 of the Spanish era (Vives 1963: 42). The Spanish era started in 38 BC. Thus the exact day of the gathering would be 17th of May, 527. But already in 16th c. the accuracy of this information was challenged by Caesar Baronius (later followed by Antoine Pagi). They assumed that the years of the reign of Amalaric should be counted from 526, the year of death of Amalaric`s grandfather Theodoric the Great who acted as a regent in Visigothic kingdom. The fifth year of Amalaric would be then 531 and not 527. The defenders of the date transmitted in manuscript tradition proposed a solution. The councils in Tarragona in 516 and in Gerona in 517 were dated by the years of reign of Theodoric in Spain. It was then argued that after the expulsion of King Gesalic in 511, Theodoric ruled Spain in his own right and not as a regent. Only in 522 did he accept the title of regent and guardian of his grand-son Amalaric and this was the formal beginning of the latter`s rule. To corroborate this version R. Collins quotes also Isidore of Seville, Historia Gothorum 39, who says that Theodoric left the kingdom of Spain to Amalaric while still alive (Collins 2004: 41).