From Pope Gregory the Greatc. 601
Gregory to Mennas of Telona (Toulon), Serenus of Massilia (Marseilles), Lupus of Cabillonum (Châlons-sur-Saône), Aigulfus of Mettæ (Metz), Simplicius of Parisii (Paris), Melantius of Rotonius (Rouen), and Licinius , bishops of the Franks. A paribus. Though the care of the office you have undertaken reminds your Fraternity how you ought to assist...