Pilgrimage and Ascetic Life
The accounts of Gerasimus describe a long course of monastic wandering before he settled on Cephalonia. He was made a monk on Mount Athos and, by the sources, spent roughly twelve years in Jerusalem; the OrthodoxWiki account adds time in places such as Mount Sinai, Egypt, and Crete, and notes a period of cave-dwelling.
Before reaching Cephalonia he spent time on the island of Zakynthos, where tradition relates that he lived for several years in a cave. Settling on Cephalonia, he again took up the solitary life, dwelling for a time in a cave at Lassi before gathering a community.
The Monastery at Omala
On Cephalonia, Gerasimus restored an old church and built a women's monastery around it at the place called Omala, near the village of Valsamata. The house was dedicated to the Dormition of the Theotokos and, according to the sources, also bore the name 'New Jerusalem.'
The monastery cared for the poor and became a center for charity. It remains the principal site of his veneration on the island, and his relics are kept there.
Relics & Shrines
Gerasimus's body is reported to have been buried and afterward exhumed intact; this discovery of incorruption led the Church to number him among the saints. His incorrupt relics are kept at the monastery he founded near Valsamata and are made available for veneration.
The OrthodoxWiki account relates that the relics remain whole and incorrupt and are associated with a sweet fragrance and many reported miracles.
Veneration & Patronage
Gerasimus is honored as the patron saint of Cephalonia and protector of its inhabitants. He is commemorated on August 16 and on October 20, the latter marking the translation of his relics.
In the broader Orthodox tradition he is invoked especially on behalf of the mentally afflicted and those held to be demon-oppressed.