Agnellus was a 6th-century bishop who led the church in Ravenna from 557 until his death in 570. Born around 487 to an influential Italian noble family, he inherited significant wealth and was once married, having a daughter. Following the passing of his wife, he entered the priesthood. After serving as a deacon, he was elevated to the position of bishop, a role he held for thirteen years during the period of the Ostrogothic Kingdom.