Vissarion of the Agathonos was a Greek Orthodox monk born in Petalidi in 1908. He entered monastic life during his youth and resided at the Agathonos Monastery near Lamia. Known for his compassionate and humanitarian character, he lived until 1991 in Athens. His reputation for holiness grew significantly following the discovery of his well-preserved remains in 2006, leading to his canonization by the Ecumenical Patriarchate in 2022.