The only known source of information about the life of St Gervasios is an 1845 manuscript of Dosimos Constamonite of Lesbos:
'Let us visit the respected Monastery of Karakallos. Here we find St Gervasios, who originated from a village called Gomati, in the area of Ierissos. He gave up the world, and went to the Monastery of Karakallos and had his hair cut, and with it, he cut off all the secular thoughts. And after he took off the worldly apparels, he put on the angelic habit of the monks. Having done this, Gervasios was not content, like many are today, but kept on seeking in every way and struggling to act as a true angel. That is how he imitated Simeon and Andrew the Fools and, pretending to be a fool, he wondered around Athos like a madman. Only after he died did people recognize his sanctity, by the divine grace and by the fragrance of his holy and venerable relic.'
