Alfonso III's contributions to building construction are not nearly as well documented as Ramiro I's or Alfonso II's contributions. The Chronicle of Alfonso III does not mention any buildings created by Alfonso III, neither does the Chronicle of Albelda. In 882, the body of the Cordoban martyr Eulogius was sent to Oviedo. This was meant a diplomatic gift from Emir Muhammad I (852–886). Eulogius was executed in 859. The body was likely accompanied by Eulogius's book collection. In the 16th century, the only manuscript of Eulogius's writings was discovered in the Oviedo Cathedral Library. Here it was copied once before it disappeared completely from the library. Following an offensive in 881 against an Umayyad army, Alfsonso III returned to Oviedo to rebuild churches. It was at this time he constructed one or more palaces. The Chronicle of Albelda and the Chronicle of Sampiro tie Alfonso III's victories in battle to his program of church building in Oviedo. In 908, Alfonso III commissioned a gold and jewelled cross to contain the cross carried by Pelagius I at Covadonga. This "Cross of Victory" is located in the Camara Sancta in the Oviedo Cathedral. However, recent Carbon14 analysis of the wooden cross indicates that it was no older than the golden casing created to surround the cross. The commission of the casing shows us Alfonso III's interest in perpetuating the legend of Pelagius I.