 The first known Bishop of Sulmona is Palladius (499); in 503 a Fortunatus Valvensis is mentioned.Saint Pamphilus, Bishop of Valva, renowned for his sanctity and miracles, died about 706; he was buried in Sulmona Cathedral.Four or five other bishops of Valva are known, but none of Sulmona until 1054, when Pope Leo IX named as Bishop of Valva, the Benedictine Domenico, and determined the limits of the Dioceses of San Pelino (Saint Pelinus) (i.e., Valva) and San Panfilo (Saint Pamphilus) (i.e., Sulmona), which were to have only one bishop, elected by the two chapters.