| Surname | County | Households 1847-64 |
|---|---|---|
| Ahern | Cork | 615 |
| Barry | Cork | 1224 |
| Boyle | Donegal | 889 |
| Brady | Cavan | 1019 |
| Brennan | Kilkenny | 648 |
| [O']Brien | Cork, Tipperary | 1224, 1083 |
| Buckley | Cork | 830 |
| Burke | Galway, Tipperary | 906, 674 |
| Byrne | Carlow, Dublin, Wexford Wicklow | 573, 582, 537, 1205 |
| Callaghan | Cork | 989 |
| Carroll | Tipperary | 507 |
| Collins | Cork | 1014 |
| [O']Connell | Cork | 956 |
| [O']Connor | Cork, Kerry | 762, 1353 |
| Cronin | Cork | 695 |
| Crowley | Cork | 735 |
| Daly | Cork | 860 |
| Delany | Laois | 727 |
| Doherty | Donegal | 1430 |
| Donnelly | Tyrone | 600 |
| Donovan | Cork | 1723 |
| Doyle | Wexford, Wicklow | 1176, 556 |
| Driscoll | Cork | 1017 |
| Duffy | Monaghan | 621 |
| Dunne | Laois | 803 |
| Dwyer | Tipperary | 966 |
| Fahy | Galway | 568 |
| Farrell | Longford | 510 |
| Fitzgerald | Cork, Kerry, Limerick | 740, 578, 619 |
| Foley | Cork | 529 |
| Furlong | Wexford | 527 |
| Gallagher | Donegal, Mayo | 1732, 627 |
| Gleeson | Tipperary | 754 |
| Harrington | Cork | 581 |
| Hayes | Cork | 619 |
| Hogan | Tipperary | 800 |
| Hughes | Armagh | 538 |
| Hurley | Cork | 612 |
| Keeffe | Cork | 788 |
| Kelly | Galway, Mayo, Roscommon, Tyrone | 986, 595, 815, 514 |
| Kennedy | Tipperary | 1112 |
| Leary | Cork | 980 |
| Lynch | Cavan, Cork | 516, 582 |
| Maguire | Fermanagh | 762 |
| Maher | Tipperary | 1244 |
| Mahony | Cork | 1505 |
| McCarthy | Cork, Kerry | 2094, 715 |
| McKenna | Monaghan | 758 |
| McLoughlin | Donegal | 740 |
| McMahon | Clare | 799 |
| McNamara | Clare | 715 |
| Moran | Mayo | 566 |
| Moriarty | Kerry | 514 |
| Murphy | Cork, Kerry, Kilkenny, Wexford | 2639, 787, 888, 1693 |
| [O']Brien | Clare, Limerick | 540, 721 |
| [O']Donnell | Donegal | 1082 |
| Power | Waterford | 1628 |
| Quinn | Tyrone | 575 |
| Redmond | Wexford | 531 |
| Regan | Cork | 717 |
| Reilly | Cavan, Meath | 1759, 579 |
| Riordan | Cork | 615 |
| Roche | Cork | 584 |
| Ryan | Kilkenny, Limerick, Tipperary | 616, 1110, 4090 |
| [O']Shea | Cork, Kerry | 583, 1082 |
| Sheehan | Cork | 869 |
| Smith | Cavan, Down, Meath | 1074, 635, 578 |
| [O']Sullivan | Cork, Kerry | 3388, 2567 |
| Sullivan | Kerry | 2567 |
| Walsh | Cork, Galway, Kilkenny, Mayo, Tipperary, Waterford | 1218, 672, 1430, 1092, 657, 835 |
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