Conn reigned for 20 years. He was also known as Conn "of the Hundred
Battles", Conn, King of Munster and Constantine Centimachus. He was the 110th
Monarch of Ireland.
Conn was also known as Constantine Centimachus. Having succeeded Cahir Mor
[the 109th], King of Leinster whom he slew in 123, Conn had long and fierce
contests with Eoghan [Owen] Mor [Olioll Olum's father] for the sovereignty of
the country. Conn fought 100 battles against the Ulsterians and 100 battles
more in Munster. They at length agreed to divide the Kingdom between them by
a line drawn direct from Dublin to Galway. The northern half, consisting of
the Kingdoms of Meath, Ulster and Connaught being Conn's share and thence
called Leath Cuinn [Conn's Half(of Ireland)]; and the southern portion,
including the Kingdoms of Leinster, and Munster being allotted to Owen Mor or
Mogha Nuadhad as he was called, and named Leath Mogha. This division was long
recognized thereafter. Conn had two brothers Eochaidh Fionn-Fohart and Fiacha
Suidhe; who to make way for themselves murdered two of their brother's sons
named Conla Ruadh and Crionna. They were banished by the third son, Art
Eanfhear, first into Leinster and then into Munster, where they lived near
Cashel.
They were seated at Deici Teamhrach [now the Barony of Desee in Meath], whence
they were expelled by the Monarch Cormac Ulfhada, son of Art. After various
wanderings, they went to Munster where Oilioll Olum, who was married to
Sadhbh, daughter of Conn of the Hundred Battles, gave them a large district of
the present County of Waterford, a part of which is still called Na-Deiseacha,
or the Baronies of Desies.
They also were given the countries comprised in the present baronies of
Clonmel, Upper-Third, and Middle-Third, in County Tipperary, which they held
until the Anglo-Norman Invasion.
Conn was barbarously slain by Tiobraidhe Tireach, son of Mal, son of
Rochruidhe, King of Ulster. This murder was committed when Conn chanced to be
alone and unattended by his guards. The assassins were 50 ruffians, disguised
as women, whom the King of Ulster employed for the purpose.