Braulio speaks about Wiligildus as a bishop from a very distant country ("the great distance of land between us"). He is not mentioned in the acts of the Spanish councils, and we know nothing more about him. Lambert (1931) proposed to identify Wiligildus with Vilegisil of Toulouse who is told to be present at the council in Reims in 625. However, this council and the subscriptions of its participants are known only from the 10th-century historian, Flodoard (Historia Remensis ecclesiae II, 5). Alternatively Lambert proposed to identify Aiulfus with Aviulfus, bishop of Valencia, known from the correspondence of Desiderius of Cahors (letter II, 3, ca 641-650; Lambert 1931).
It is possible that Braulio sends greetings to Aiulfus because he was an abbot of the monastery from which the monk has fled.