Cizy of Rieux

Cizy of Rieux was a martyr of the 8th or 9th century, of the family of the dukes of Burgundy, born at Besançon, a soldier of Charlemagne, and is patron of the town of Rieux-⁠Volvestre in the Haute-⁠Garonne. He is venerated in the Western Church and commemorated on 16 August.

The account says he was taken prisoner by Muslims coming from Spain. He refused to deny his Christian faith and embrace the religion of Muhammad, and was martyred at the foot of the city of Angonia, now Martres-⁠Tolosane, near Rieux-⁠Volvestre. The cathedral of Rieux keeps a reliquary with a tooth of the saint, set in a silver cylinder.

The sources are few, and the account is traditional.