The paper aims to present the hagiographical cycle of Saint Peter Martyr in the inner façade of the Santissima Trinità church in Brindisi (Apulia), formerly part of a Dominican monastic complex to be dated, in the actual architectonical forms, from the first quarter of the 13th century. The detailed analysis of the seven panels of the cycle, not all of them correctly identified until now, leads the reader following the figurative story of the Vita of the martyr of Verona through the primary hagiographical sources, namely the Leggenda by fra’ Tommaso Agni da Lentini; moreover, despite the Western theme of the cycle, a Mediterranean root in the gender of the Apulian wall-painting vita icon is argued.