Schaff, Philip. History of the Christian Church (The Complete Eight Volumes in One). Amazon Kindle Edition, 2014.
Volume 2, Ante-Nicene Christianity A.D. 100-325, “Chapter 13. Ecclesiastical Literature of the Ante-Nicene Age, and Biographical Sketches of the Church Fathers.” sec. 159-204.
§ 181. Dionysius of Corinth.
Schaff introduces Dionysius of Corinth as bishop after A.D. 150, until about A.D. 170. “He was a famous person in his day, distinguished for zeal, moderation, and a catholic and peaceful spirit” (Schaff 2014, loc. 21932). He wrote numerous pastoral letters to different churches, all lost, but summarized by Eusebius, in addition to four fragments known to Schaff (Schaff 2014, loc. 21938). His letters were apparently read in churches.