 Complete the following phrase:  Ruricius collection of 83 letters, of which 12 are addressed to him, survive in a single manuscript called Codex Sangallensis 190. They cover a period of about 30 years, and describe what happened in Gaul after the final Roman withdrawal just before 480. The letters give insight into what the life of the literate Roman population was like under barbarian rule; what changed, and what remained. For example, they make almost no note of the effect of the Visigoths on local life and activities, posing the question as to whether the locals were very much affected. Most of Ruricius correspondence was directed to nearby bishops, and people in his family. Although he does have some renowned correspondents, for the most part, they are not well known. Finally, the letters of Ruricius shed light on the underlying circumstances surrounding the 