Gerasimus of Kefalonia was a 16th-century Eastern Orthodox priest and monk who is honored as a wonderworker. Born into the wealthy Notaras family in 1506, he pursued a religious life through studies at Mount Athos and a twelve-year period in Jerusalem. After traveling through Crete and Zakynthos, he settled on the Greek island of Kefalonia in 1555. He lived initially in a cave before founding a monastery near Valsamata, which served as a significant center for charitable work and aid for the poor.