Idalius

Idalius, also called Idacius, was bishop of Barcelona between 666 and 689. He was a friend of Julian, metropolitan of Toledo, with whom he dealt at the Fifteenth Council of Toledo in 688 and who wrote, at Idalius's request, the Prognosticon futuri saeculi. In 689 he sent this treatise to Sunifred, metropolitan of Narbonne, asking him to spread it among his suffragans. He died old, at Barcelona, soon after, around the year 689.

He was the successor of Quirze in the see of Barcelona and was succeeded by Bishop Pascal. Unable to go to the Thirteenth Council of Toledo in 683, he sent his deacon Laulf as vicar. At the Fifteenth Council he was present in person and presided over all the bishops of Spain and Narbonese Gaul. Julian dedicated to him another work, now lost, and called him a saint, a fame that passed into later literature. He was not, however, entered in the calendars of saints after the reform of the sixteenth century, and although he is mentioned as a saint in chronicles and histories, he never had popular veneration, and his probable ancient cult has been lost.