For example:

BREEN - Galway
BOYD (Laois, Antrim)
COUGHLIN Brave in Difficulties Offaly
COSTELLO Galway, Mayo, Clare
CONDON Cork, close to the adjoining counties of Limerick and Tipperary, called the barony of Condons
CUMMINGS
DUFFY Tyrone
FARRELL,
FITZPATRICK Counties Kilkenny and Laois
GALLAGHER
GILMARTIN Originally from France, followers of St Martin. Then Galway. Granted lands by Strongbow. Original Tribes of Galway

HICKEY, HORAN
MANN,
LONERGAN - Tipperary
MALONE A devotee of St John. From Connacht (northwest Ireland)
MORAN Galway, and at Ardnaree, County Mayo
MCGRATH,
MCNEELY
LAWLOR,
MCGINN
MULDOON Tyrone
O'KEEFE,
O'MALLEY,
QUINN Counties Antrim, Longford and Clare
ROONEY
MCGINNIS, MCGUINESS,
MCGOWAN
MCLOUGHLIN, MCLAUGHLIN
MCNALLY
MONAGHAN,

REARDON - County Tipperary, but migrating to County Cork

REGAN There were three main septs of this family in Ireland, Meath and Dublin, Counties Clare, Limerick and Tipperary, South West Cork

TOOHEY O' Towie, O' Tuohy, O' Towey, Tuohy, Twohig, Twohy, Twoohy, Toohy, Tuhy, Tooey, Toohey, Towey, Towhey, Touey,=Clare
FALLEN
SHERIDAN
WALDRON
WARD

AHERN Co Clare, Cork Waterford

BARRY Cork The most common origin of the Barry surname comes from De Barri, a French Norman name which was derived from a small village in Normandy known as La Barre. The first bearer of the surname to arrive in Ireland was Robert de Barri, one of the original band of Norman Knights who landed at Bannow in Co. Wexford in May 1169. In the 1180's, more Barry's starting leaving the Welsh coasts and began settling in Cork, Irleand. It was here in Cork that the Barry's thrived, becoming one of that county's major lineages with three major branches and many minor ones. These include derivatives such as: De Barry, Barrymore, Barryroes, O'Barry and of course, Barry. However, not all Irish Barrys descended from De Barri. Some modern Barrys were originally called Ó'Beargha `descendants of Beargh'. Beargh was a nick-name meaning `robber'.

BOYLE Ruddy. In the Middle Ages the O'Boyles were powerful and respected chieftains in County Donegal

BROWN/BROWNE This surname is common in both England and Ireland, but the variant surname 'Browne' is associated more with Ireland. ... The Irish Brown families are most commonly found in the province of Connacht (specifically Galway and Mayo), as well as Kerry. The Browne family arrived in Ireland in 1170 in Strongbow's time, and were soon established in Galway and Mayo. The surname is still well represented in these two counties and is also one of the legendary 'Tribes of Galway'.

The Galway Brownes (Lords Oranmore) are descendants of a 12th Century Anglo-Norman invader called "Le Brun", while the Brownes of Killarney (Lords Kenmare) are descended from an Elizabethan settler.

Browne is now the 5th most common surname in England and the first recorded spelling of the family name is shown to be that of William le Brun, dated 1169, in the Northumberland county pipe rolls. Interesting early recordings of the surname include Anthony Browne, the 1st Lord Montague (1526 - 1592).

Amongst the very earliest of settlers to the new colonies of America was Edward Browne, who emigrated from London to Virginia in September 1635. Today Browne is the 6th most popular surname in the United States and the second most common surname among African Americans

BYRNE can be found flying around all over Counties Wicklow and Dublin. Byrne, originally O’Byrne, comes from the Gaelic O'Broin meaning "descended from Bran,” an 11th century King of Leinster. The O'Byrnes were chieftains of what is now County Kildare until the Norman invasion when they were driven from their lands and migrated (ha!) into the mountains of County Wicklow. meaning "raven". The Byrne or O'Byrne (Ó Broin) family originally came from Kildare claiming descent from Bran, the king of Leinster, who died in 1052.


BOURKE

BOYLAN

BRADLEY Derry

BRADY

BRENNAN


CALLAGHAN 'bright-headed'. Mallow, Co. Cork

CARROLL 'warlike champion' or 'valorous in battle'. The O'Cearbhaills were prominent in the Province of Leinster. There were six separate O'Carroll clans in Ireland, in Counties Kerry, Offaly, Monaghan, Tipperary, Leitrim and Louth. Carrolls of Northern origin descend from the MacCearbhaill clan who were located in Ulster particularly near the town of Derry. There is also a MacCarroll family (anglized to MacCarvill) from the province of Ulster. Your tour

CASEY Watchful. Casey genealogy begins County Cork. There are at least six septs (family branches) of the Caseys in Ireland today, mostly in Counties Cork and Dublin. Casey family history includes many notable people including William Casey, director of the Central Intelligence Agency from 1981 to 1987; and father and son US Army Generals George William Casey, Sr., and George William Casey, Jr. O'Casey were also the chiels of Pubblebrien, Co. Limerick


CONNELL Three distinct O'Connell clans arose separately as surnames in Connacht, Ulster and Munster, but the most prominent and numerous of these were the O'Connells of Munster. They were mainly located in County Kerry where they were originally lords of the barony of Magunihy from very ancient times. Today a large majority of the O'Connells in Ireland are still to be found in Kerry, as well as in adjoining County Cork, but descendants with this name can be found in every county in Ireland. Limerick. 'strong as a wolf'.

CONNOLLY Monaghan most prominent. 'as fierce as a hound / wolf'. The Irish name Connolly derives from a number of different native Irish septs. The O'Conghailes were an ancient Connacht sept where the English version is now often spelt 'Connelly', they were also found in County Monaghan. The O'Congheallaigh sept was located in the Province of Munster, mainly in West Cork. The Ulster Connollys derive from both the O'Conghalaigh of Fermanagh and the Monaghan Connollys.

CUNNINGHAM an extended family with its roots in the north west of Ireland - villages of NewtownCunningham and ManorCunningham

COLLINSyoung dog. In Ireland, Collins may be regarded as a genuinely indigenous Irish name; ranked number 30 in Ireland it is one the most numerous surnames, with an estimated Collins population of 14,000 persons, the majority of which come from Counties Cork and Limerick.

CONNOR Hero, champion or patron of warriors. Not everybody with the surname is descended from the same source or the same clan. There are at least three main groups each descended from a different Conor or ConnorThe majority of all the many O'Connor names in Ireland are largely in the Kerry, Limerick and Cork areas.

CANNON Tirconnell. Wolf cub. a territory in Ireland, now more commonly referred to as County Donegal, although the Kingdom and later Principality of Tyrconnell was broader than that, including parts of Sligo, Leitrim (present day Republic of Ireland), Tyrone, Fermanagh and a southern part of Derry. Your tour is in September/

CUSACK Meath

DALY The surname Daly is among the thirty most frequently found in Ireland. The Dalys claim descent from an Irish hero from Celtic mythology, Niall of the Nine Hostages, who was High King of Tara 380 to 405AD. The main O'Daly sept belonged to County Westmeath but they later located branches in Galway, Clare and Cork where the majority of descendants can still be found.

DOHERTY is an Irish clan based in County Donegal. Today there are Doherty families in many parts of Ireland, with primary concentration in their homeland of the Inishowen Peninsula, Co. Donegal and the vicinity of Derry. The names Doherty and Dougherty in Ireland are derived from the Irish word "dochartach" meaning obstructive or hurtful.

DONOVAN Limerick. Crom Castle
DOWNEY fort. Cork and Down

DOYLE dark and tall, Leinster Dublin

DRISCOLL Baltimore and islands of Cape Clear, Sherkin and Heir have been the seat of the O' Driscoll clan for 1,000 years or more and there are plenty of O' Driscolls living in the area today to prove it

DWYER Tipperary, Limerick, Kilkenny, Cork. Their original homeland was in the mountains of west Tipperary, at Kilnamanagh between the modern town of Thurles and the Limerick border, where they held power and resisted the encroachments of the English down to modern times.

EARLY Kilkenny, Tipperary

EGAN also Keegan. Tipperary

FLANAGAN The Irish names Flanagan and O'Flanagan are derived from the native Gaelic O'Flannagain Septs who were located in Counties Roscommon, Fermanagh and Offaly. The O'Flannagain chief was one of the 'royal lords' to the King of Connaught. The name is taken from a Gaelic word meaning 'red' or 'ruddy and is among the one hundred most frequently found in the country.

HAGGERTY "unjust". Originally from Ulster, Counties Donegal and Derry. Also County Cork.

Hughes Most bearers of this name are from the Ulster sept O hAodha (descendants of Hugh), who were mainly concentrated in parts of north Tyrone and Donegal. In Monaghan, a closely related variant, O hAoidh, became Hoey. Hughes was also a common surname in England and Wales from the Middle Ages, and the name was borne by many seventeenth century settlers in Ireland.

KENNEDY helmet headed. Tipperary.

LYNCH - Galway The term lynching was coined when Judge Lynch ordered the hanging of his own son.


LYONS Mayo

MAGEE The Irish name Magee is derived from the native Gaelic Mag Aoidh Sept that was mainly located in the Province of Ulster in County Antrim. The name translates as meaning 'son of Hugh'. McGee is another usual form of this name which was also brought to the country by settlers from Scotland.

MacMahon, one of the top five names in Monaghan, derives from mathghamban, a bear. They are descended from Mahon O'Brien, grandson of Brian Boru.

MILLIKAN Means "bald". The name has been traced from its original source, and from its Norman-French adoption, directly into England and southern counties of Scotland and Ireland - Donegal especially. The name in Scotland is spelled "Milliken", in Ireland, "Milligan", and in England, "Millikin" and "Millican". In the north of Scotland it is sometimes found as "Mulliken". In United States the surname in various branches of the family has been spelled Mulliken, Milliken, Millikin, Millican and Millikan.

NUGENT fine, stately Westmeath

MURPHY - the sea battlers Murphys – you win the prize for most common and widespread name in Ireland, especially in County Cork. This surname, translates to Gaelic as McMurchadh (son of Murchadh) and O'Murchadh (descendent of Murchadh), a derivation of the first name of Murchadh or Murragh. O'Murchadh families lived in Wexford, Roscommon and Cork, in which county it is now most common, with the McMurchadhs of the Sligo and Tyrone area responsible for most of the Murphys in Ulster. The name was first anglicized to McMurphy and then to Murphy in the early 19th century.

KELLY, (Irish Gaelic: O Ceallaigh) O'KELLY (the bright-headed ones) is a genuine 'O' surname which belongs to the oldest class of native Irish surnames. It means 'Descendent of Ceallach' (war or contention), and is the name of several distinct and illustrious families in various parts of Ireland. The Kellys are all over Ireland; the name originates from around 10 different and unrelated ancient clans or septs. These include O'Kelly septs from Meath, Derry, Antrim, Laois, Sligo, Wicklow, Kilkenny, Tipperary, Galway and Roscommon. O'KELLY was chief of the great Uí Maine clan and ruled over an extensive territory in the counties of Galway and Roscommon. Whilst the name "O'Kelly" dominated from the Viking Era in the 9th century to the middle of the 16th century, the "O" was dropped during the sixteenth and seventeenth centuries and the name became Kelly. This arose from the policy of Queen Elizabeth I of England to break the influence of the gaelic chieftains by rewarding them with land and noble status in return for abandoning their Irish customs. Typical of this was the granting of land and rights to Colla O'Kelly, Seventh lord of Screen in 1601AD in exchange for his dropping the "O" from the surname.

MCNULTY It is derived from the pre 10th century Gaelic Mac an Ultaigh meaning the "son of the Ulsterman", a regional locational name. They held great power as the royal family of Ulidia in County Down and South Antrim until 1177, where they were defeated by the Norman army and greatly reduced in power. After this defeat, the majority gathered themselves together and migrated to Donegal where they became hereditary physicians to the O’Donnells.

O'SULLIVAN OR SULLIVAN are one of the most populous of the Munster families. In Irish, O'Sullivan is O'Sileabhin, and there is no doubt that origin of the name comes from the word sil (eye), though whether it is to be taken as "one-eyed" or "hawkeyed" is in dispute among scholars. Originally lords of the territory around Cahir, County Tipperary, in the 12th century, they migrated to what is now West Cork and South Kerry, where the name is still very prominent.

WALSH Walsh – the Welshmen The meaning of this “Welsh” name is pretty straightforward. The name Walsh is one of the most common of the Norman associated names found in Ireland. It seems to have been the name used by the many different groups of Welsh people who arrived in Ireland with the Normans during the 12th century. It is found in every county and is particularly strong in Mayo, where it has first place, and also in Galway, Cork, Wexford, Waterford and Kilkenny.

O'BRIEN – the noblemen O’Briens are pretty lucky – they are descended from one of the greatest and most famous Irish kings. The name O’Brien, also spelled O'Bryan or O'Brian, translates to Ó Briain in Gaelic, which means "of Brian.” The name indicates descendance from Brian Boru, the celebrated High King of Ireland. This gives O’Briens leave to call themselves “high” and “noble.” Most O’Briens can be found in Counties Clare, Limerick, Tipperary and Waterford.


RYAN Name meaning: "Descendant of Rían (little red one/little king disputed)" Counties associated with the name: Carlow, Tipperary, Limerick

O'CONNOR The O'Connor name, with its varied spellings, doesn't spring from a common source. The name arose in five areas of Ireland: Connacht, Kerry, Derry, Offaly and Clare and split into six distinct septs. The most prominent sept is that of the Connacht O'Connors who gave us the last two High-Kings of Ireland: Turlough O'Connor (1088-1156) and Roderick O'Connor (1116-1198). They trace their heritage and name from the Irish "Ua Conchobhair," meaning from Conchobhar, a king of Connacht.

O'NEILL family traces its history back to 360 A.D. to the legendary warrior king of Ireland, Niall of the Nine Hostages, who is said to have been responsible for bringing St. Patrick to Ireland. Niall is also said to have been incredibly fertile – he has 3 million descendents worldwide. “O’Neill” is derived from two separate Gaelic words, "Ua Niall," which means grandson of Niall, and "Neill" meaning "champion." Ireland’s O'Neills were known by the nickname "Creagh," which comes from the Gaelic word "craobh" meaning branch, because they were known to camouflage themselves to resemble the forest when fighting the Norsemen. Crafty fellows, those O’Neills

O'REILLY The O'Reillys were the most powerful sept of the old Gaelic kingdom of Breffny (Cavan and the surrounding counties), and the family is still prominent in the area.


POWERS the poor man. Waterford

SHEA Hawk. Co Kerry

STACK The Stacks, who originally came from England, have been in Co. Kerry since the beginning of the fourteenth century and by the sixteenth had become thoroughly Irish, being among the foremost Kerry opponents of the English in the Elizabethan wars. They were allied by marriage to several of the great families of Desmond John Stack was Bishop of Ardfert from 1558 to 1588 and Philip Stack from 1588 to 1595. General Edward Stack (c. 1750-1833) was a notable officer in the Irish Brigade in France, and also in Pitt's Irish Brigade. Their association with Clanmaurice is perpetuated in the Stack Mountains between Tralee and Abbeyfeale and a district in the vicinity was long known as Pobble Stack or Stack's Country.

SHEEHAN peaceful or "Siodach", gentle and courteous. Originally belonging to County Clare, this clan moved southwards to occupy Counties Cork, Kerry and Limerick, and it is in these counties that the name is most numerous today

TRIMBLE The Trimble name is derived from Turnbull and is of English/Scottish origin, in the borders area. Some Trimbles emigrated to Ireland, notably Armagh and Fermanagh.