Its first bishop was one Roger de Comminges, a monk who came from the monastic community of St. Bertrand de Comminges.
The see was suppressed in 1790.
St. Papoul
St. Papoul was a bishopric from 1317 until 1790. Its cathedral is in many respects a really fine work. It was an ancient abbatial church in the Romanesque style, and has an attractive cloister built after the same manner.
Rieux
Rieux is perhaps the tiniest ville of France which has ever possessed episcopal dignity. It is situated on a mere rivulet—a branch of the Arize, which itself is not much more, but which in turn goes to swell the flood of La Garonne. Its one-time cathedral is perhaps not remarkable in any way, though it has a fine fifteenth-century tower in brique. The bishopric was founded in 1370 under Guillaumé de Brutia, and was suppressed in 1790.
Lavaur
Lavaur was a bishopric, in the ecclesiastical province of Toulouse, from 1317 to 1790.
Its cathedral of brick is of the fourteenth century, with a clocher dating from 1515, and a smaller tower, embracing a jacquemart, of the sixteenth century.
In the interior is a fine sixteenth-century painting, but there are no other artistic treasures or details of note.