Cenn Fáelad mac Blathmaic (died 675) followed his father Blathmac mac Áedo Sláine

Blathmac mac Áedo Sláine

Blathmac was a son of Áed Sláine. According to the Irish annals he was High King of Ireland.-Sons of Áed Sláine:Blathmac's father Áed Sláine was a son of Diarmait mac Cerbaill, the apical ancestor of the southern branches of the Uí Néill kindred which dominated Ireland from the late 6th century...

 (d. 665) and his brother Sechnassach

Sechnassach

Sechnassach mac Blathmaic followed his father Blathmac mac Áedo Sláine and uncle Diarmait mac Áedo Sláine as High King of Ireland and King of Brega...

 (d. 671) as High King of Ireland

High King of Ireland

The High Kings of Ireland were sometimes historical and sometimes legendary figures who had, or who are claimed to have had, lordship over the whole of Ireland. Medieval and early modern Irish literature portrays an almost unbroken sequence of High Kings, ruling from Tara over a hierarchy of...

 and king of Brega

Kings of Brega

-Overview:Brega took its name from Mag Breg, the plain of Brega, in modern County Meath, County Louth and County Dublin, Ireland. They formed part of the Uí Néill kindred, belonging to the Síl nÁedo Sláine branch of the southern Uí Néill. The kingdom of Brega included the Hill of Tara, the site...

. He belonged to the Síl nÁedo Sláine

Síl nÁedo Sláine

Síl nÁedo Sláine is the name of the descendants of Áed Sláine , son of Diarmait mac Cerbaill. Part of the Southern Uí Néill—they were the kings of Brega—they claimed descent from Niall Noígiallach and his son Conall Cremthainne....

 kindred of the southern Uí Néill

Uí Néill

The Uí Néill are Irish and Scottish dynasties who claim descent from Niall Noigiallach , an historical King of Tara who died about 405....

 which took its name from his grandfather Áed Sláine

Áed Sláine

Áed mac Diarmato , called Áed Sláine , was the son of Diarmait mac Cerbaill. Legendary stories exist of Áed's birth. Saint Columba is said to have prophesied his death...

 (died 604).

He was killed, probably in an ambush during a royal circuit of Ireland, near Lough Derg, by his first cousin, rival, and eventual successor, Fínsnechta Fledach

Fínsnechta Fledach

Fínsnechta Fledach mac Dúnchada was High King of Ireland. Fínsnechta belonged to the southern Síl nÁedo Sláine sept of the Uí Néill and was King of Brega, in modern County Meath, Ireland. He was a grandson of Áed Sláine. His father Dúnchad had died in 659...

 (died 695).

The Fragmentary Annals of Ireland say of this:

The soldiers from the west of the land closed about Fínnachta;Cenn Fáelad's kingship was shorn from him—great its propriety.

While the Baile Chuinn Cétchathaigh, compiled in the reign of Fínsnechta, does not include Cenn Fáelad among its High Kings, the Chronicle of Ireland

Chronicle of Ireland

The Chronicle of Ireland is the modern name for a hypothesized collection of ecclesiastical annals recording events in Ireland from 432 to 911 AD....

, on which other Irish annals

Irish annals

A number of Irish annals were compiled up to and shortly after the end of Gaelic Ireland in the 17th century.Annals were originally a means by which monks determined the yearly chronology of feast days...

were founded, named him as a High King. The omission of Cenn Faelad from this king list may be deliberate as it was compiled in the reign of his killer Fínsnechta Fledach.

His descendants the Uí Chinn Fháelad sept played no major role.