Tipperary, Wexford, Waterford, and Cork. However, the SRDs follow the general outlines of Poor Law Unions that preceded them (see accompanying map), and often overlap across two or more counties. SRDs are also distinct from civil and ecclesiastical parishes. When searching for the birth, marriage, or death record of an Irish ancestor, you need to know or at least have a good idea of the specific SRD and townland in order to find the record in the databases. Starting from the northwestern tip of the island, including both Ireland (the Republic of Ireland) and Northern Ireland, and moving successively southward as if reading sentences in a book from left to right, the SRDs (with alternate spellings or new names) and the country or counties in which each one occurs are as follows: Dunfanaghy - Donegal. Milford (Millford) - Donegal. Inishowen - Donegal. Glenties - Donegal Letterkenny - Donegal Stranorlar (Stranolar, Strandlar) - Donegal Strabane - Donegal, Tyrone Derry - Londonderry, Donegal Newtown - Londonderry Limavady - Londonderry Coleraine - Antrim, Londonderry Ballymoney - Antrim, Londonderry Ballymena - Antrim Ballycastle - Antrim Larne - Antrim Donegal - Donegal Castlederg - Tyrone Irvinestown - Cavan, Fermanagh, Tyrone Omagh - Tyrone Gortin - Tyrone Gortin was abolished in 1889 and its land split between Omagh and Strabane. Cookstown - Tyrone Dungannon - Tyrone Magherafelt - Londonderry Antrim - Antrim Belfast - Antrim, Down Newtownards - Down Sligo - Sligo Ballyshannon - Donegal, Fermanagh, Leitrim Manor Hamilton (Manorhamilton) - Leitrim Enniskillen - Cavan, Fermanagh, Tyrone Lisnaskea - Cavan, Fermanagh Clones - Fermanagh, Monaghan Clogher - Monaghan, Tyrone Monaghan - Monaghan Armagh - Armagh, Tyrone Lurgan - Antrim, Armagh, Down Banbridge - Armagh, Down Lisburn - Antrim, Down Downpatrick - Down Dromore West - Sligo Tobercurry - Sligo Boyle - Leitrim, Roscommon, Sligo Carrick on Shannon - Leitrim, Roscommon Bawnboy - Cavan, Leitrim Mohill - Leitrim Cavan - Cavan Cootehill - Cavan, Monaghan Castleblayney (Castleblaney) - Armagh, Monaghan Carrickmacross - Monaghan Dundalk - Armagh, Louth, Monaghan Newry - Armagh, Down Kilkeel - Down Belmullet - Mayo Killala - Mayo Ballina - Mayo, Sligo Ballina was reduced in size in 1850, creating Killala and Belmullet. Swineford (Swinford) - Mayo, Roscommon Castlerea (Castlereagh) - Mayo, Roscommon Strokestown - Leitrim, Roscommon Longford - Longford Granard - Cavan, Longford, Westmeath Oldcastle - Cavan, Meath Bailieborough (Bailieboro) - Cavan, Meath Kells (Ceanannus Mor in Irish) - Cavan, Meath Navan (An