Pope Gregory the Greatc. 595
Gregory to Donus, Bishop of Messana (Messene). Moved by the benevolence of the Apostolic See, and by the order of ancient custom, we have thought fit to grant to you, who art known to have undertaken the office of government in the Church of Messana, the use of the pallium; to wit, at such times and in such manner as we dispute not that your pre...
gregory great, Letter 6009