Tethbae (Old Irish pronunciation:[ˈteθve]; also spelledTethba, often anglicisedTeffia)[n 1] was aconfederation oftúatha in central Ireland in theMiddle Ages. It was divided into two distinct kingdoms, north Tethba, ruled by theCenél Coirpri, and south Tethba, ruled by theCenél Maini. It covered parts ofCounty Westmeath and much ofCounty Longford, counties which today are the far north-west part of theprovince ofLeinster. In some cases, Tethbae may refer to South Tethbae only.
InEarly Christian times, Tethba lay within the lands of the southernUí Néill and the ruling dynasties of both kingdoms were reckoned members of the Uí Néill kindred in medievalgenealogies. North Tethba—Tethbae Thúaiscirt—was centred onGranard, while south Tethba—Tethbae Deiscirt—lay aroundArdagh.[3]
The division of Tethbae into northern and southern regions was attested in the 7th century. It was not only a political and dynastic division. The chief churches of the two-halves belonged to different church confederations. North Tethbae's principal church at Granard was associated withSaint Patrick from the earliest written records. BishopTirechán'shagiography refers to "the two Tethbae" and claims that Patrick established bishops at both Granard and Ardagh. But although Granard is included among the network of Patrician churches, Ardagh is not.[4] The key figure in Ardagh tradition was its founder,Bishop Mél, according to Patrician accounts a nephew of Patrick. Ardagh, by the time of Tirechán and the earliest records, was a part of the confederation of churches which tookBrigit of Kildare as chief patron and looked mainly to the church atKildare for leadership.[5]
Medieval Irish traditions presented the lands of the Uí Néill as conquests byNiall of the Nine Hostages and his sons. Niall's sonCoirpre was theeponymous ancestor of Cenél Coirpri. Along withFiachu, he may have led the earliest Uí Néill conquests in the midlands.[6]
North Tethbae,Cenél Coirpri Mór, was one of three kingdoms named for Coirpre mac Néill. To the north-west of Tethbae, on the shore ofDonegal Bay, was the kingdom ofCenél Coirpi Dromma Clíab. To the south-east, inCounty Kildare, aroundCarbury, itself named for Coirpre, was a third branch of Cenél Coirpi but this was not established until much later. This alignment of territories, together with the evidence of theIrish annals, which include a series of entries crediting Coirpre with the conquest of the midlands, suggests that the kingdom of Coirpre once extended over 100 miles across Ireland.[7]
Apart from Coirpre himself and his grandsonTúathal Máelgarb, no king of Cenél Coirpri is included in later lists of High Kings of Ireland. Later kings of Cenél Coirpri are mentioned in theAnnals of Ulster and other Irish annals with some frequency, although usually only to report their deaths. Most kings are simply called "king of Cenél Coirpri", although Conaing (died 752) is specifically called "king of Coirpri of Tethbae". An entry in 799 reporting the deaths of two kings of Coirpri, Murchad ua Cathail and Dub Innrecht mac Artgaile, shows that the kingship could be shared. In addition to the usual annalistic reports,Óengus Bronbachall, grandson of Túathal, is mentioned inAdomnán'sLife of SaintColumba.[8]
At least in earlier historical times, Cenél Coirpri may have been of sufficient importance to attract the attention of largely hostile writers. Tirechán's life of Patrick states that Coirpre was cursed by the saint, at thehill of Tara, that none of his descendants would be High King.[9] Túathal Máelgarb is portrayed in a poor light by later writers dealing with the life ofDiarmait mac Cerbaill, his perhaps-kinsman whose descendants,Clann Cholmáin and theSíl nÁedo Sláine, replaced the kindreds of Coirpre and Fiachu as rulers of the midlands.[10]
In the 11th century, north Tethbae was largely absorbed by the expandingkingdom of Bréifne, ruled by the Ua Ruairc branch of the Connachta kindred ofUí Briúin, and its clients the Conmaicne Réin.[11]
While Coirpe mac Néill is a major figure in the annals and appears in Tirechán's hagiography,Maine son of Niall is not mentioned by Tirechán, nor is there any record of his conquests. It may be possible, and is perhaps even probable, that descent from Niall of the Nine Hostages through an otherwise poorly attested line of descent is a genealogical fiction designed to strengthen Uí Néill control of the midlands. The Cenél Maini probably originated as part of a much largerUí Maine kingdom extending from the eastern part of modernCounty Galway throughCounty Roscommon, across theRiver Shannon, and into County Longford.[12]
Although officially incorporated into the Uí Néill, no king of Cenél Maini was ever reckoned a High King of Ireland. TheVita tripartita Sancti Patricii does, however, say that the kings of Cenél Maini had a privileged place in choosing and inaugurating High Kings, much like theAirgíalla, another group believed to have been associated with the Connachta, of which the Uí Néill were only the leading group, by genealogical fictions.[13]
The Cenél Maini are still represented today among theIrish nobility andChiefs of the Name by the O'Kearney or Ó Catharnaigh family, the head of whom is traditionally styledThe Fox.