Máel Sechnaill
Máel Sechnaill's real achievements were in Ulster and Munster. Shortly after killing Cináed with the aid of Tigernach mac Fócartai, Máel Sechnaill met with the king of Ulster, Matudán mac Muiredaig, and the chief cleric of Ulster, Diarmait, Abbot of Armagh. Here Máel Sechnaill was acknowledged as High King by the Ulstermen. This did not end strife between the Uí Néill and the kings of Ulster as Armagh was raided by Máel Sechnaill in 852. However, Ulster provided troops for Máel Sechnaill, whose army is called "the men of Ireland" in 858.