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TheSouthern Uí Néill (Irish:Uí Néill an Deiscirt,[iːˈnʲeːl̠ʲəˈdʲɛʃcəɾˠtʲ]) were a branch of theUí Néill dynasty that invaded and settled in theKingdom of Mide and its associated kingdoms.[1]
Two sons ofNiall Noigiallach,Lóegaire (fl. c. 450) andCoirpre (fl. c. 480), initially led the dynasty. As did their immediate descendants. However, after the murder ofTúathal Máelgarb in about 544, it was left to another branch of the family descended from another of Niall's sons –Conall Cremthainne – to continue Uí Néill expansion and consolidate their position. No descendants of eitherLugaid mac Lóegairi or Túathal Máelgarb are recorded.[citation needed]
Just as their kinsmen theNorthern Uí Néill split into two main branches, so too did the Southern Uí Néill, both being descended from sons ofDiarmait mac Cerbaill,Colmán Már andÁed Sláine. The former was the progenitor of theClann Cholmáin, while the latter was the eponymous ancestor of theSíl nÁedo Sláine.[2] Clann Cholmáinruled the kingdom of Mide, while Síl nÁedo Sláine wereKings of Brega.[1]
According toA Dictionary of British and Irish History (2020), the "last effective high‐king of the Southern Uí Néill" was Conchobar Ua Máel Sechlainn.[3] A member of the "Clann Cholmáin dynasty of the Uí Néill", he diedc. 1073.[4]
Niall Noigíallach, d. 450/455? | |_________________________________________________________ | | | | | | Coirpre Lóegaire Conall Cremthainne | | | | | | Cormac Cáech Lugaid Fergus Cerball | d. 507 | | | Túathal MáelgarbDiarmait mac Cerbaill, died 565. died 544/549. | ________________________________________|______________________ | | | | | | Colmán Már, d.555/8 Colmán Bec, d. 587.Áed Sláine, d.604. | | | |Clann Cholmáin dynastySíl nÁedo Sláine dynasty
The main Southern Uí Néill dynasties were Clann Cholmáin, who ruled the kingdom of Mide, and Síl nÁedo Sláine, who ruled Brega, while their northern cousins were Cenél nEógain and Cenél Conaill
[The] Southern Uí Néill [..] were split into two main groups that dominated the east midlands, namely Síl nÁedo Sláine and Clann Cholmáin
The last effective high‐king of the Southern Uí Néill was Conchobar Ua Máel Sechlainn (ruled 1030–73)