Isarn (bishop of Grenoble)

During the reign of Conrad the Peaceful he was instrumental in re-asserting Christian political authority in the south of the Kingdom of Burgundy, overrun by Saracens, and in restoring the shattered Church in the region.

In 972 a raiding party of Saracens from Fraxinetum captured Mayeuil, abbot of Cluny, while he was returning from a visit to Rome.

Another charter, c. 1040, details the foeff of Ainardus de Domena, including two mansi which had been given by Bishop Isarnus to his grandfather.

[6] Elsewhere in a charter, but with no specifics, we are told that Isarn granted castles and land to nobiles, mediores et pauperes: noblemen, the middle class, and the poor.

A person could be charged with replanting a large tract of land or rebuilding a set of houses in return for his owning a precarium or usufruct on half of them for his lifetime.