(Arelate), an ancient archiepiscopal see in Lower Provence, on the left of the Rhone, seven leagues from its mouth, about one hundred and eighty-six leagues from Paris. It is said to derive its name from Ara elata, a high altar raised here in pagan times. A number of councils and synods were held at Arles, of which the following are the chief:
(1.) In 314, a general synod for the West, at which Constantine and 600 or 633 bishops were present; 22 canons were framed on the Donatists, etc.;
(2.) in 428 or 429, at which Germanus and Lupus were deputed to England;
(3.) in 455, under Ravennius, to settle the dispute between Faustus, abbot of Lerins, and the bishop of Frejus;
(4.) in 475, against Lucidus, accused of Predestinationism;
(5.) in 524, under Caesarius, four canons on ordination were published;
(6.) in 1234, under John Baussan, twenty-four canons were published against heretics, chiefly against the Waldenses;
(7.) in 1275, by Bertrand de S. Martin, twenty-two canons were published, and the clergy forbidden making wills.-Landon, Manual of Councils; Smith, Tables of Church Hist.