John of the Grating was a 12th-century Cistercian prelate who served as the Bishop of Aleth. Born in Brittany in 1098, he was appointed to his episcopal position in 1144. To safeguard his diocese from pirate attacks, he successfully moved the episcopal see to Saint-Malo in 1146 with the approval of Pope Eugene III. His nickname, which refers to a protective shrine grating, became associated with his identity as a defender of the faith and his administrative duties.
Ecclesiastical career
During his tenure, John managed various legal challenges, including disputes with monks from Marmoutiers. He was also active in addressing religious deviations, specifically confronting the Éon de l'Étoile heresy. His contributions to monastic life included the founding of the Montfort and Guingamp Abbeys. He died in 1163 and was laid to rest in the cathedral at Saint-Malo.
Veneration and memory
Recognized as a saint in the Catholic tradition, he is commemorated annually on February 1. His remains are preserved within a stone sarcophagus dating to the 12th century located in Saint-Malo. His legacy is maintained through his historical role in relocating the see and his efforts to establish new monastic foundations in the region.