Writing in 409, Jerome remarked, "A great many years ago when I was helping Damasus, bishop of Rome with his ecclesiastical correspondence, and writing his answers to the questions referred to him by the councils of the east and west..."
I Hieronymus' brev fra 409 noterer han: "For mange år siden hjalp jeg Damasus, biskop af Rom, med den kirkelige korrespondance og med at skrive hans svar på spørgsmål, som koncilerne i øst og vest sendte ham."