Dún Cremthainn
Archived: 3 November 2026
Abstract
In 650 CE, Ireland’s surviving historical record centres on a violent dispute within the northern Uí Néill, but it also offers unusually revealing glimpses of the island’s fragmented political world. The annals place a battle at Dún Cremthainn in this year, in which Óengus, son of Domnall, was killed by Cellach and Conall Cóel, sons of Máel Coba. Yet early Irish chronology requires care. The Annals of Ulster labels this as its entry U650 while its calendrical heading equates that annal-number with AD 649; modern reference works conventionally place the battle in 650. Other annalistic compilations assign different Irish events