Note 97 — Chapter VI · IN MEATH
Reading edition
It should be Donagh-shaughlin, for Donagh is domnach, a church, whereas dún is a fort. There is no doubt that Dún here is a corruption, as we get the form Donnaclsacheling in a document of A.D. 1216 (Reeves, Eccl. Ant. p. 128).