Ráith Beithech (Rathveagh, County Antrim) in 749. Eochaid mac Bressal, who died in 832, was the last known king of the Dál nAraidi in Tuaiscirt to hold the over-kingship of the Dál nAraidi. The last known king of Dál nAraidi in Tuaiscirt is recorded in 883. The church (or monastery) of Cuil Raithin on the shore of the River Bann lay in Eilne and was said to have been founded by Cairbre, who subsequently became its bishop. According to the Tripartite Life of St. Patrick, written in the 9th century, the Dál nAraidi had granted this church to Saint Patrick. The Airgíallan dynasty of Uí Tuirtrí that lay west of the River Bann had been active east of it from as early as 776, and by the 10th century had taken control of Eilne. Dál nAraidi in Tuaiscirt is said to have corresponded to the later baronies of Dunluce Lower and North East Liberties of Coleraine, and appears to correspond to the trícha cét of An Tuaiscert. It also became an Anglo-Norman cantred called Twescard, which later would absorb the cantred of Dalrede (based on Dál Riata), with these two combined cantreds forming the basis for the rural deanery of Twescard. A sub-division of in Tuaiscirt called Cuil an Tuaiscirt, meaning the "nook/corner" of Dál nAraidi in Tuaiscirt, was located in the north-west of the petty-kingdom near Coleraine. Its territory would form the basis of the later barony of North East Liberties of Coleraine. Magh Line The Dál nAraidi Magh Line, or the Dál nAraidi of Moylinny (modern-Irish Maigh Line, meaning "plain of Line") was the predominant dynasty of the Dál nAraidi. It was centered in southern County Antrim, with Ráith Mór its royal seat. In the 10th century they are counted as one of twelve tuatha of Ulaid. Line may represent the name of an original population grouping. It was also known as Mocu Aridi. Their territory at its height spanned southern County Antrim and northern County Down containing the tuatha of Magh Line, Dál mBuinne, and Dál Sailni. It was later known as Trian Congaill, meaning the "third of Congal Claen" (Caech), and became an alias for the territory of Clandeboye, named as such after the Clandeboye O'Neill's who conquered the area in the late 14th century. By the 10th century Dál mBuinne was counted amongst the twelve tuatha of Ulaid. After the Viking era, Dál Sailni and