Gennadius. Lives of Illustrious Men 44
44 Innocentius the bishop
Innocentius, bishop of Rome, wrote the decree which the Western churches passed against the Pelagians and which his successor, Pope Zosimus, afterwards widely promulgated.
Philip Schaff and Henry Wace (eds.), New York: Christian Literature Publishing Co., 1890-1900. Public domain: English translation first published 1885-1900 (Nicene and Post-Nicene Fathers, Second Series).