The province of Connaught consists of Counties Galway, Leitrim, Mayo, Roscommon, and Sligo.
The province of Leinster consists of Counties Carlow, Dublin, Kildare, Kilkenny, Laois (Queen's), Longford, Louth, Meath, Offaly (King's), Westmeath, Wexford, and Wicklow.
County Carlow
County Dublin
- Swords Heritage Centre
- County Dublin GenWeb
- County Dublin Fianna Page
- Dublin Directory of 1850
- The 1851 Dublin City Census Index
- Glasnevin Cemetery in Dublin
- Dublin Street Names
County Kildare
County Kilkenny
- County Kilkenny Fianna Page
- Kilkenny Genealogy and History
- Kilkenny Genealogy Links
- Kilkenny Parishes and Towns
- Kilkenny Archaeological Society
County Laois (Queen's)
County Longford
County Louth
County Meath
County Offaly (King's)
- Irish Midlands Ancestry
- Offaly Historical & Archaeological Society
- County Offaly Fianna Page
- Offaly GenWeb
County Westmeath
County Wexford
County Wicklow
The province of Munster consists of Counties Clare, Cork, Kerry, Limerick, Tipperary, and Waterford.
County Clare
- County Clare GenWeb
- Clare Local Studies Project
- Clare County Library Genealogy
- Parishes and Townlands in Clare
- Parliamentary Gazeteer of Clare 1845
- 1901 Census of County Clare
- County Clare Surnames and Census Records
County Cork
- Cobh Heritage Centre
- Cork Historical & Archaeological Society
- Cork Archives Institute
- Mallow Archaeological & Historical Society
- Guy's Postal Directory 1914 for County Cork
- Landowners in County Cork 1876
- County Cork GenWeb
- Cork Genealogy Links
- Cork City Library
- Cork Genealogical Society
- Cork Parishes
- Civil Parish Maps of County Cork
- Baronies of County Cork
- 1766 Census Records, Diocese of Cloyne
- Diocese of Cork & Ross
- Towns in County Cork 1837
- Graveyards of County Cork
- Estate Papers of County Cork
County Kerry
- Kerry County Library
- Diocese of Kerry (Ardfert)
- County Kerry GenWeb
- Ballyferriter (Dingle) Genealogy
- Dingle Genealogy Helper
County Limerick
- County Limerick Genuki
- Civil Parishes of County Limerick
- Limerick Genealogy
- County Limerick Surnames and Census Records
- Pigot's Directory of Limerick 1824
County Tipperary
- Tipperary GenWeb
- Tipperary Family History Research (Cashel & Emly records)
- Clogheen and District Genealogy
- Assisted Emigrants from Tipperary to Australia
- County Tipperary Surnames and Records
County Waterford
The province of Ulster consists of Counties Antrim, Armagh, Cavan, Derry, Donegal, Down, Fermanagh, Monaghan, and Tyrone.
County Armagh
County Cavan
County Derry
County Donegal
County Fermanagh
County Monaghan
County Tyrone