"Ballyshannon. (July 25, 1824.) Soon after leaving Pettigo going towards Lough Derg, the limestone ceases and the mineral productions change entirely..."
"The ground-works of many ruins can still be traced to Saint Daveog's Island on Olean na Naomh or Island of the Saints) and a paved way (via strata) or old road can still be traced..."
"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..."
"(June 8, 1632) Right Honorable. I have received a copy of a letter sent by my lord Balfour, directed to his Lordship, myself and others for seizing until his Majesty's use St Patrick's Purgatory..."
"The Lough, which is said to be about nine miles in circumference, is situated in the midst of high hills, which rise on all sides without the slightest appearance of cultivation..."