The O’Learys of Fermoy.
By Peter O’Leary.
You are probably all familiar with the Clan of
O’Leary who were the chieftains of the Tuath of
Uibh Laoghaire from about 1100 AD up to the
destruction of the Clan system in the years
following 1689 AD.
It is perhaps less well known that there were
other families who took the name of O’Leary in
other parts of the country, for example
One of them however
was established in the Fermoy district,
and there are many people of this name still in
that area, and in Wexford where many of them
settled later.
They are not related to the O’Learys who
come from Uibh Laoghaire.
This is all quite simply explained.
Surnames were introduced around 1000 AD
because of the rapid expansion of the
population.
One popular method was to honour one’s
grandfather, or an earlier forebear, by using
his name in the newly adopted surname.
Thus one of the Clans in Rosscarbery had
a much respected ancestor called Laoghaire who
had lived in the 6th.c. AD and they
called themselves after him, O Laoghaire or
descendant of Laoghaire.
This Clan formed part of a large and numerous
tribe called the Corca Laoighdhe who were named
after a king of Ireland called Luy Maccon who
thrived in the early 3rd century .AD.
This tribe originally occupied a
territory which was roughly the area of the
present day baronies of Carbery, Bantry and
Beara together.
Fermoy
At the same time in the 3rd century.
AD there was a tribe called the Fir Maige Feine
who had a territory mainly situated to the North
of the River Blackwater, in North East Co.Cork.
It can be defined roughly by the present
day baronies of Fermoy, and Condons and
Clangibbon.
(see Journal no 11, page 55).
The modern town of
One of the families making up the Fir Maige
Feine named themselves as O’Leary at the same
time in about 1000 AD, and again, honoured some
ancestor of their own.
We do not know much of the history of this Clan
of O’Leary.
They do however make a brief appearance
in the Annals named The Book of Lismore, where
they appear as the chieftains of a Tuath or
civil parish, known as Ui Becce Abha.
Their territory lay to the North of the River
Blackwater and was centered on their ring fort
of Dun Cruadha.
This Tuath today forms the modern civil
parishes of
Castletownroche,
Kilcummer,
These O’Learys were a vassal clan to the major
clan in the area, Ui Cheim
(later O’Keefe).
This was one of the Eoganacht family of
the kings of
It appears that O’Leary shared the
The church and burial ground for both these
families was at Cill Connuir (Kilcummer).
Other names of clans in this kingdom were
Duggan, Buckley, and Dinneen, just like in
Rosscarbery at the same time.
Apart from these facts we know nothing of the
day to day history of this O’Leary clan.
We do however know the manner of it’s
demise.
In about 1100 AD the area was overrun by
the Anglo-Norman baron named De Rupes or Roche.
He seized control of all the land and
built his principle castle on the site of Dun
Cruadha, whose name was changed to
Castletownroche.
The clan system was destroyed and the
existing land holders became mere tenant farmers
under the Roches.
Before reaching Fermoy, the Roches had been
granted extensive lands in the Wexford area.
In the 16th.c. one of these
Wexford Roches died and left his lands to a
Fermoy Roche.
This man thereupon moved to Wexford and
took with him many of his tenant farmers.
This event explains the presence today of
a number of the Fermoy O’Learys in the
During the 18th. And 19th.
Centuries there was much movement of population
within the Country and then by emigration
abroad.
Today it is often difficult to identify
whether an O’Leary originally came from Fermoy
or from Uibh Laoghaire, if that family have
moved from their homeland.
But there are of course a number of families in each district who have lived there for many generations, and about whom we have no doubts of their origin.