¹³⁶Petrie, George. "On the History and Antiquities of Tara Hill." The Transactions of the Royal Irish Academy, vol. 18, 1839, p. 137.
"By the side of Rath Laoghaire, to the south-east, lies the Monument of Mata Morglonnach, a treacherous solder, who lived with Cormac. One day, there were four youths playing at a certain game by the side of Rath Laoghaire, to the south east, Mata buried the four down to their hips in the ground."