sentences:  Returning home, he remained a year at Clonenagh before crossing Slieve Bloom and founding a church near Lough Derg.John Healy reports that around 520 Columba was prompted by an angel to relocate to Inis Cealtra, where he remained a long time.According to one story, when one of his monks died suddenly on the shore opposite the northern part of the island, Columba ordered the monks to go and say to the dead man, "Columba bids thee arise."