too weak to offer protection to the city or its much reduced citizenry. In 808, Leo committed Corsica to Charlemagne for safe-keeping because of Muslim raids, originating from Al-Andalus, on the island. Nonetheless, Corsica, along with Sardinia, would still go on to be occupied by Muslim forces in 809 and 810. Episcopal policy Leo helped restore King Eardwulf of Northumbria and settled various matters of dispute between the archbishops of York and Canterbury. He also reversed Pope Adrian I's decision in regards to the granting of the pallium to Bishop Hygeberht of Lichfield. He believed that the English episcopate had been misrepresented before Adrian and that therefore his act was invalid. In 803, Lichfield was a regular diocese again. Theological policy Pope Leo III unambiguously supported the current theological position in the West in his time: that Holy Spirit proceeds from both the Father and the Son; he stated on this position: "it is forbidden not to believe such a great mystery of the faith". However, he refused to change the creed which he said was the product of the "divine illumination" of the council fathers, and considered not everything needed for salvation was in the creed. Leo III "placed two silver shields in Rome with the uninterpolated creed in both Greek and Latin." The Liber Pontificalis states Leo III put those shields at the top of St. Peter's entrance "in his love for and as a safeguard for the orthodox and catholic apostolic faith". Death and legacy Leo III died in 816 after a reign of more than 20 years. He was originally buried in his own monument. However, some years after his death, his remains were put into a tomb that contained the first four popes named Leo. In the 18th century, the relics of Leo the Great were separated from his namesakes, and he was given his own chapel. Leo III was canonized by Clement X, who, in 1673, had Leo's name entered in the Roman Martyrology. See also List of Catholic saints List of popes Donation of Constantine References External links Translation of Einhard's Life of Charlemagne (c. 817–830, translated in 1880) 8th-century births Leo III Popes Italian popes Papal saints Filioque 8th-century archbishops 9th-century archbishops 9th-century Christian saints 8th-century popes 9th-century popes Canonizations by Pope Clement X Burials at St. Peter's Basilica