Among the numerous sermons of St Peter Chrysologus there are none for this day. As regards St Chrysostom, while we have seven sermons of his in honour of the apostle Paul, we have only one “on Peter and the Prophet Elias” conjointly, in which St Peter is only briefly mentioned in the introduction and treated as of secondary importance. There is nothing to show that it was preached on the 29th June.[609] The fact that neither of these saints preached on this day, is an indication of the practice followed at Ravenna and Antioch. With regard to Rome, the local tradition, which regarded the 29th June as the day on which both apostles were put to death, was committed to writing by the chronographer of 354, and all later chronographers. A western tradition, supported by many of the great Fathers of the Church, adds further that, though both apostles died on the same day of the month, they died in different years. This idea appears in St Augustine, in the _Leoninum_, Arator, Gregory of Tours, and in three Greek writers, but scholars have so far ignored it. It is further evident from the _Depositio Martyrum_ that the day of their death was specially chosen for a translation of their relics which took place in 258. The special festivities observed in Rome are described for us by Prudentius from what he had seen himself when he visited the city about 405. According to him the whole city was in commotion: the faithful visited the tombs of the apostles and in the two churches erected in their honour, pontifical mass was celebrated.[610] This is in complete agreement with the tradition according to which devotion to the martyrs was closely connected with the spot where they suffered and with the date on which they suffered, and the chief commemoration consisted in the offering up of the Holy Sacrifice over their tombs. Owing to the distance which separated the two churches of the apostles from one another, it was most fatiguing to celebrate mass at both places, and so in course of time the festival was divided into two parts, and the Mass in honour of St Paul took place on the 30th June. An examination of the earliest Roman missals shows that in the _Leoninum_ there is a number of masses for this day, all commemorating the two apostles together, but, in the _Gelasianum_, on the contrary, there is only one mass for the two apostles conjointly (_III. Kal. Jul. in Natali SS. Apostolorum Petri et Pauli_), and, in addition, one for each of them separately. It may be that the division of the feast was then customary, but the 29th June continued to be called _Natalis SS. Apostolorum Petri et Pauli_. As early as the fifth century the feast was kept at Rome with a vigil and octave.[611]