"Occasional freakish summer storms are peculiar to Lough Derg. Pilgrims often alighting at the shore on a tranquil summer day are often surprised at the unexpected commotion of the deeps and the dark yeasty appearance of the water..."
"From Armagh it is almost one day's journey to a certain Island, which is slightly large called Mabeoch and beyond this Island to a small island in which is the Purgatory aforsaid..."
A description of the lake taken from O'Connor's account of an 1836 story in the Dublin Penny Journal Count Raymond de Perilleaux's 1397 journey to the Purgatory
