 The development of Patrician legend also saw Secundinus becoming gradually more involved in the process whereby the see of Armagh received the relics of Saints Peter and Paul.St Patrick, according to his "Tripartite Life", entrusted his see to Secundinus when he went to Rome to obtain the relics, while the preface to the "Hymn" tells that Patrick had sent him off to obtain them in person.Secundinus is said to have died in 447 or 448, aged 75.