Theodoricus (1) I. ( Theodericus ), chosen king of the Visigoths on the death of Valia, A.D. 419. He was the real founder of the West Gothic kingdom. On his accession the Visigoths held nothing in Spain, but occupied in Gaul Aquitania Secunda, the region lying, roughly speaking, between the Loire and the Garonne, with some neighbouring cities, of which Toulouse, their capital, was the most important. This territory had been ceded to Valia as the price of the foedus with Rome. The history of Theodoric's reign consists of a series of endeavours to extend this territory when the Romans were otherwise occupied, with intervals of renewal of the foedus, the Goths, however, retaining what they had won. In the great battle of the Mauriac plains Theodoric, who was advanced in life, fell from his horse and was trampled to death by his own troops (A.D. 451). Salvian ( de Gub. Dei, vii. 154) praises him for his piety, to which he attributes the defeat of the self-confident Litorius. Though, like the rest of his race, an Arian, he did not persecute the Catholics. Prosper and Idatius, Chronica; Jordanes, Get. 34–40; Isidorus, Hist. Goth., Hist. Suev., Dahn, Die Könige der Germanen, v. 71.
[F.D.]