 It may have been given on the occasion of the increase of the "census" in 1077 or perhaps on Hugh's visit to Burgos in 1090.Cluniac authors from this time, such as Peter the Venerable and Bernard of Clairvaux, do refer to the king of León and Castile as "emperor" ("imperator").After a large gift to Cluny following his conquest of Huesca in 1097, Peter I of Aragon and Navarre was mentioned alongside the king of León in the daily intercessional prayers of the monks of Cluny.