Peregrinus

Holy Martyr Peregrinus suffered at Thessalonica, beside the saints Irenaeus and Irene, in the time of the emperor Diocletian (284-305), because they refused to offer sacrifice to idols. They died by fire and are called "glorious martyrs of Thessalonica in Macedonia".

The three are mentioned in both the Hieronymian and the Roman Martyrology. Their martyrdom appears in the Latin codices with many variants, so various hypotheses have arisen which question the martyrdom of Irenaeus and Peregrinus at Thessalonica or identify Irene with the Great Martyr Irene, or with the Irene martyred at Thessalonica along with Agape and Chione (16 April). Nevertheless, most of the codices and Western hagiographic notes expressly describe them as saints of Thessalonica. The Greek source notes that his existence and details are not verified in every respect.

He is a saint of the undivided Church, commemorated on 5 May in the calendar of the Church of Greece (new style).