Main Surnames of Antrim and Down

Smith, Johnston, Thompson, Wilson, Campbell, Stewart, Robinson, Bell, Brown and Boyd.

Some Common Armagh Surnames

Among the most common surnames in Armagh are Murphy, Hughes, Wilson, Campbell, O'Hare, Smith, McCann, Donnelly, Watson and Quinn.

Popular Carlow Surnames

Byrne, Doyle, Farrell, Kavanagh, Kinsella, Lawler/Lalor, McDonald/McDonnell, Murphy, Nolan, Walshe

Some Cavan Surnames

Chief surnames of Co Cavan are Reilly, Smith, Brady, Lynch, McCabe, Clarke, Farrelly, Maguire, Sheridan and Galligan

Common Clare Surnames

The more common surnames in County Clare include McMahon, McNamara, O'Brien, Moloney, Ryan, Kelly, Mclnerney, O'Connor, Keane, O'Halloran, Hogan, Burke, Murphy, Lynch and Walsh

Some common Cork Surnames

The chief surnames in rural County Cork include: McCarthy, Callaghan, McAuliffe, Fitzgerald, Sullivan, Murphy, Walsh, Connor and Connell

Main Surnames of Antrim and Down

Smith, Johnston, Thompson, Wilson, Campbell, Stewart, Robinson, Bell, Brown and Boyd.

Chief Surnames of County Derry

Doherty, McLaughlin, Gallagher, McCloskey, Kane, Kelly, Coyle, Moore, Bradley and Campbell

Chief Surnames of County Tyrone and County Fermanagh

Murphy, Hughes, Wilson, Devlin, McManus, Armstrong, Donnelly, O'Neill, Quinn, Cassidy and Maguire

The chief surnames in West Galway include: Joyce, Conneely, Burke, O'Malley, McDonagh, Flaherty, Faherty, Mannion, Walsh and King

Some Galway Surnames East

The most common surnames in East Galway include: Kelly, Fahy, Burke, Madden, Mannion, Connolly, Kenny, Egan, Lyons and Donoghue

Some Common County Kilkenny Surnames

Popular surnames in Kilkenny City and county include: Murphy, Walsh, Brennan, Maher, Butler, Phelan (& O'Phelan), Grace, Fitzpatrick, Comerford and Ryan.

The Main Surnames of Counties Laois and Offaly

Kelly, Dunne, Molloy, Carroll, Egan, Dempsey, O'Connor, Daly, Fitzpatrick and Lalor.

Some Common County Leitrim Surnames

The chief surnames found in County Leitrim include Reynolds, McGowan, Rooney, Flynn, Kelly, Gallagher, Moran, Dolan, McLoughlin and McMorrow.

Chief Surnames of County Derry

Doherty, McLaughlin, Gallagher, McCloskey, Kane, Kelly, Coyle, Moore, Bradley and Campbell.

Some Common County Longford Surnames

Today, O'Farrell or Farrell is still the most dominant surname in the County. Other common surnames are, Quinn, Kenny, Kiernan, Mulvey, Smith, Leavy, Kelly, Glennon, Keenan, Casey and Murphy.

Popular Surnames of County Meath

Reilly, Smith, Lynch, Brady, Farrell, Farrelly, Kelly, Brien, Daly and Maguire.

Common Mayo Surnames

The more common surnames in the North Mayo include Gallagher, Durkan, McHale, Barrett, McNulty, McNicholas, Brennan, Henry, Doyle, Harkin, Dogherty, Foy, Kelly, Loftus, Gaughan and Lavelle.

In South Mayo common surnames includes Walsh, Burke, Gibbons, Prendergast, Joyce, Murray, Gallagher, Lydon, Heneghan, Murphy, O'Malley, Kelly, Moran, Duffy, O'Connor, Waldron, Farragher.

Popular Surnames of County Meath

Reilly, Smith, Lynch, Brady, Farrell, Farrelly, Kelly, Brien, Daly and Maguire.

The Main Surnames of Counties Laois and Offaly

Kelly, Dunne, Molloy, Carroll, Egan, Dempsey, O'Connor, Daly, Fitzpatrick and Lalor.

Popular Surnames in County Roscommon

Hanley, Beirne, Kelly, Brennan, Connor, Flynn, Cox, McDermott, Brady and Farrell are the most numerous surnames in County Roscommon.

Surnames of County Sligo

The top ten most common surnames in County Sligo are as follows: Gallagher, Brennan, MacGowan, Kelly, Gilmartin, Healy, Walsh, Hart, Feeney and MacDonagh.

Main Surnames

The chief surnames of North Tipperary include Ryan, O'Brien, Kennedy, O'Meara, Maher/Meagher, Burke, Gleeson, Carroll, Hogan and Kelly.

The chief surnames found in South Tipperary include Ryan, Dwyer, Maher, Brien, Hayes, Quirke, Treacy, Meara, Macken, Maloney, Lonergan.

Chief Surnames of County Tyrone and County Fermanagh

Murphy, Hughes, Wilson, Devlin, McManus, Armstrong, Donnelly, O'Neill, Quinn, Cassidy and Maguire.

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Chief Surnames of Co Waterford

Power, Walsh, O'Brien, Murphy, Ryan, McGrath, Foley, Flynn, Morrissey, Kelly, Phelan and Sullivan.

Chief Surnames in County Westmeath

The chief surnames found in Co. Weatmeath include (Mc) Geoghegan, O'Growney, Brennan, O'Coffey, O'Mulleady, O'Malone, O'Daly, McAuley, McCormack.

Common surnames in County Wexford

Murphy, Sinnott, Doyle, Furlong, Walsh, Rossiter, Scallan, Brien, Brown, Stafford, Devereux and Kavanagh