 In 1123, however, the Duke Conan confirmed the church of Nantes as the owner of the church at Abbaretz.In June 1230 Brient Le Boeuf, called "The Old Man", Lord of Issé, donated to the Cistercian Abbey of Notre Dame de Melleray, for the salvation of his soul, some land he owned at Abbaretz.The monks of this monastery built a barn and a chapel dedicated to St. Margaret.