| Primary title | Family seat |
City townhouse |
| Duke of Abercorn |
Baronscourt, County Tyrone |
Corner of York Street and St Stephen's Green |
| Duke of Leinster | Maynooth Castle, County Kildare
Carton House, Maynooth
Kilkea Castle, County Kildare |
Leinster House
13 Dominick Street |
| Marquess Conyngham | Slane Castle, County Meath
The Hall, Mountcharles, County Donegal |
|
| Marquess of Donegall | Belfast Castle, County Antrim
Dunbrody House, County Wexford |
|
| Marquess of Downshire |
Clifton Castle, North Yorkshire |
|
| Marquess of Ely | Loftus Hall, County Wexford
Rathfarnham Castle |
Ely House, Ely Place |
| Marquess of Londonderry | Mount Stewart, County Down |
|
| Marquess of Sligo | Westport House, County Mayo |
|
| Marquess of Waterford | Curraghmore, County Waterford |
Tyrone House |
| Earl of Aldborough |
Belan Lodge, Moone, County Kildare
Stratford Lodge, County Wicklow
Mountneil House, County Carlow |
Aldborough House, Dublin
Stratford House, London |
| Earl of Antrim | Glenarm Castle, County Antrim |
Antrim House, Merrion Square |
| Earl of Bandon | Castle Bernard, County Offaly |
|
| Earl of Bantry | Bantry House, County Cork |
|
| Earl of Barrymore | Fota House, County Cork |
|
| Earl of Bective |
Headfort House |
Bective House, Smithfield
Bective House, Parnell Square |
| Earl of Bellomont |
Bellamont House, County Cavan |
15 Temple Street |
| Earl Belmore | Castle Coole, County Fermanagh |
|
| Earl of Belvedere | Belvedere House, County Westmeath |
Belvedere House |
| Earl of Bessborough | Stansted Park, West Sussex |
5 Henrietta Street |
| Earl of Charlemont |
Marino House |
Charlemont House |
| Earl of Clancarty | Garbally Court, County Galway |
|
| Earl of Clare | Mountshannon House, County Limerick |
|
| Earl of Clonmell |
Bishopscourt, County Kildare
Eathorpe Hall, Warwickshire |
Clonmell House, 17 Harcourt Street |
| Earl of Courtown | Courtown House, County Wexford |
Ormond Quay |
| Earl of Desart | Desart Court, County Kilkenny |
|
| Earl of Drogheda | Moore Abbey, County Kildare |
Drogheda House, North Earl Street |
| Earl of Dunraven and Mount-Earl | Kilgobbin House
Adare Manor, County Limerick |
|
| Earl of Enniskillen | Florence Court, County Fermanagh |
|
| Earl of Fingall | Killeen Castle, Dunsany, County Meath |
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| Earl of Glandore | Ardfert Abbey, County Kerry |
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| Earl of Gosford | Gosford Castle, County Armagh |
|
| Earl of Granard |
Castleforbes, Newtown Forbes, County Longford |
|
| Earl of Howth | Howth Castle, Fingal |
|
| Earl of Kenmare | Killarney House, County Kerry |
Kenmare House, North Great George's Street |
| Earl of Kilmorey | Mourne Park, County Down |
|
| Earl of Kingston | Mitchelstown Castle, County Cork
King House, Boyle, County Roscommon |
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| Earl of Listowel | Convamore House, County Cork |
|
| Earl of Mayo | Palmerstown House, County Kildare |
|
| Earl of Meath | Kilruddery House, County Wicklow |
Ardee House, Ardee Street |
| Earl of Milltown | Russborough House, County Wicklow |
|
| Earl of Mornington | Dangan Castle, County Meath |
Mornington House |
| Earl Mountbatten of Burma | Classiebawn Castle, County Sligo |
Clonbrock, County Galway |
| Earl Mount Cashell | Moore Park, County Cork
The Barne Estate, Clonmel, County Tipperary |
|
| Earl of Portarlington | Emo Court, County Laois |
|
| Earl of Roden | Tollymore Park, County Down |
|
| Earl of Roscommon |
|
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| Earl of Rosse | Birr Castle, County Offaly |
|
| Earl of Shannon | Castlemartyr House, County Cork |
|
| Earl of Thomond | Dromoland Castle |
5 Henrietta Street |
| Earl of Tyrconnell | Donegal Castle, County Donegal |
|
| Earl of Tyrone |
Tyrone House, Dublin |
|
| Earl of Westmeath |
Clonyn Castle, County Westmeath |
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| Viscount Ashbrook | Castle Durrow, County Laois |
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| Viscount Baltinglass | San Antonia House, County Wicklow |
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| Viscount Bangor | Castle Ward, County Down |
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| Viscount Barnewall |
Turvey House |
|
| Viscount Boyne |
Stackallan House |
|
| Viscount Charlemont | Roxborough Castle, County Tyrone |
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| Viscount Doneraile | Doneraile Court, County Cork |
Doneraile House, 45 Kildare Street |
| Viscount FitzWilliam | Merrion Castle, County Dublin |
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| Viscount Gormanston | Gormanston Castle, County Meath |
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| Viscount Gough |
St. Helen's, Booterstown, Dublin |
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| Viscount Hawarden | Dundrum House, County Tipperary |
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| Viscount Langford | Summerhill House, County Meath
Mount Campbell, County Leitrim
Langford Lodge, County Antrim |
Langford House, Mary Street
Granby Row |
| Viscount Lifford | Meenglass House, County Donegal |
|
| Viscount Lorton |
Rockingham Estate, County Roscommon |
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| Viscount Massereene | Antrim Castle, County Antrim |
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| Viscount Powerscourt | Powerscourt House, County Wicklow |
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| Viscount de Vesci | Abbeyleix House, County Laois |
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| Baron Annaly | Luttrellstown Castle, Dublin |
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| Baron Barry of Santry |
Santry Court, County Dublin |
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| Baron Bellew | Barmeath Castle, County Louth |
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| Baron Blayney | Blayney Castle, County Monaghan |
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| Baron Castlemaine | Moydrum Castle, County Westmeath |
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| Baron Carew | Donadea House, County Kildare |
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| Baron Clonbrock |
Clonbrock Castle, County Galway |
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| Baron Cloncurry | Lyons Demesne, County Kildare |
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| Baron Crofton | Mote House, County Roscommon |
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| Baron Dunalley | Kilboy House, County Tipperary |
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| Baron of Dunsany | Dunsany Castle, County Meath |
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| Baron Hartland | Strokestown Park, County Roscommon |
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| Baron Inchiquin | Dromoland Castle, County Clare |
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| Baron Kingston |
Rockingham, County Roscommon |
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| Baron Monteagle of Brandon | Mount Trenchard House, County Kerry |
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| Baron Muskerry | Springfield Castle, County Limerick |
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| Baron Rathdonnell | Lisnavagh House, County Carlow |
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| Baron Talbot de Malahide | Malahide Castle, Dublin |
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| Baron Trimlestown |
Trimlestown, County Meath |
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| Baron Ventry | Burnham House, Dingle, County Kerry |
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