At that time also in the church of Antioch, Theophilus was well known as the sixth from the apostles. For Cornelius, who succeeded Hero, was the fourth, and after him Eros, the fifth in order, had held the office of bishop.
Historia Ecclesiastica
Book IV, Chapter 20. The Rulers of the Church of Antioch
1 section
Eusebius of Caesarea
Trans. Arthur Cushman McGiffert, A Select Library of Nicene and Post-Nicene Fathers of the Christian Church, Second Series, Volume I, 1890. Public domain.