Territories and Places: N - R
Napuil - Naples.
Nas - Naas in Co. Kildare.
Ned an Fhiaig - Nadnaveagh in Killukin in Co. Roscommon.
Nuachongbail; Noughaval in the Barony of Kilkenny in the west of Co. Westmeath.
Ochtar - Uachtar.
Odelb - in Tulsk in Co. Roscommon.
Omag / Ogmag; an; See: Caislen na hOmaige / Ogmaige.
Oil Finn - Elphin in Co. Roscommon.
Oilech - 1274 AD.
Oilellach - a man of Tir nAilella in the Connacht Province.
Oilen Cula na nOirer - an island off the coast of Coole Point in Upper Loch Erne in Co. Fermanagh.
Oilen Da Chruindi - island off Rynvoyle on the south shore of Killary Bay in Co. Galway.
Oilen na Cenainne - in Machaire Connacht in Co. Roscommon.
Oilen na Circe - Castle Kirk Island in the north - west of Loch Corrib in Co. Galway.
Oilen na Naem - Saint's Island in Loch Ree in Co. Longford. Oilen na Trinnoite - Holy Trinity Island in Loch Key in the north of Co. Roscommon.
Oilen na Trinnoite - Trinity Island in Loch Oughter in Co. Cavan. Oilen Ui Maille - Clare Island in Clew Bay in Co. Mayo.
Oirecht - The territory later on of the O Kanes / Muintir Ui Chathain / Cianacht in Keenaught in Co. Derry.
Oirer Gaidel - See: Airer Gaidel.
Oirgialla - See: Argialla.
Oiribertaigh - Mac Herberts / Delamer who had their Estates in Co. Westmeath.
Oirther Muman - East Munster - Mac Aedacain the Ollav in 1399 AD.
Oirther - the Baronies of Oirior in Co. Armagh O Hanlon / O hAnluain the King in 1321 AD.
Opair; an; Nobber in Co. Meath.
Ormond - Muscrith Tyre in Co. Tipperary. In the 3rd Century AD Fiacha Muilleathan the Heberian King of Munster who had his residence at Rathnoi near Cashel / Knochragan gave it to Cairbre Musc the son of the King of Meath who was a famous bard, for his poems and it was made up of large division in Munster from Gabhran / Gowran in Co. Kilkenny, westward to Cnamhelioll / Cleathchoill near Tipperary town and from Bearnan Eile / Barnanelly in Co. Tipperary, where is the Devil Bit Mountain and then southward to Oilean Ui Bhric / O Brie's Island near Bonmahon on the coast of Waterford taking in the greater part of Co. Tipperary with parts of Co. Kilkenny and Co. Waterford.
Osraige - Ossory a territory in Co. Kilkenny south - west Co. Carlow and Co. Offaly. 1473 AD O Gilla Patraic, King 1489 AD Mac Gilla Patraic, King.
Pallis / Phallis; - Pallas Beg in Forgney in Co. Longford.
Pallis / Phallis - See: Caislen na Pailisi.
Petidig - the Petits who had their Estates in Co. Westmeath.
Port Airenaig - at Erenagh in Cloontuskert in Co. Roscommon.
Port in Guirtin - at Gorteen in Clonbrony in Co. Longford.
Port Indsi - Portinch - in Emlaghfad in Co. Sligo.
Port Lairge - Co. Waterford.
Port Lecce - Port on the River Shannon in Kiltoghert in the south of Co. Leitrim.
Port na Leiu - Port Lecce.
Port Locha Leisi - on or near the shore of Loch Muckenagh in Kilglass in the east of Co. Roscommon.
Port Locha Mesca - at Ballinchalla on the east shore of Loch Mask in Co. Mayo. The birthplace of Cathal Crobhdhearg O Connor. 1224 AD.
Port Loman - Portloman on the west shore of Loch Owell in Co. Westmeath.
Port na Cairrce - at Rockingham n on the south shore of Loch Key in the north of Co. Roscommon.
Port na Cranne - at O Reilly's Island in Loch Allen in Co. Roscommon.
Port na Tri Namad - formerly Portnatrynod on the Co. Tyrone side of the River Finn opposite Lifford in Co. Donegal.
Purgadoir Patraic - on an island in Loch Derg in the south of Co. Donegal.
Raith Aeda Meic Bric - Rahugh in Moy Cashel in Co. Westmeath.
Raith Aird Craibi - See: Caislen Raith Aird Craibi.
Raith Both - Raphoe in Co. Donegal.
Raith Branduibh - Rathfran Abbey in Templemurry in Co. Mayo.
Raith Brenainn - Rath Brennan in Co. Roscommon.
Raith Cruachan - Rathcroghan in Elphin in Co. Roscommon.
Raith Espuic - Rathaspick in Moygoish in Co. Westmeath.
Raith Guaire - Rathwire in Farbill in Co. Westmeath.
Raith Imain / Imgain - Rathangan in Co. Kildare.
Raith Maolain - Rathmullan in Co. Donegal.
Raith Mor (Muigi Line) - Rathmore in Co. Donegal and Co. Antrim.
Raith na Romanach - Rathnarovanagh in Kilmore in Co. Roscommon.
Raith Riabach - in Rathreagh in Ardagh in Co. Longford.
Ratha / Rathai - See: Caislen Rathain.
Ratsecer - 1333 AD.
Rechra Muintir Birn - Rathlin O Beirne Island off the south - west of Co. Donegal.
Recles Gilli Mo - Laisi Ui Gilla Urain - in or near Tuam in Co. Galway.
Recles Petair Agus Poil - O Connor's Island in Co. Roscommon.
Rinn; in; - See: Caislen in Renna.
Rinn Duin - Randoon at St. John's Point on the shore of Loch Ree in Co. Roscommon.
Rodba - the River Robe in the south of Co. Mayo.
Roim; an; - Rome - Romanaig / Romans.
Ros Birn - Rossbourne in Kilmacowen in Co. Sligo. Ros Comain - Roscommon town. Ros Gede - Ross Point in Sligo Bay. Ros Laeg - Rosslee in Easky in Co. Sligo. Ros Mor - Rossmore near Elphin in Co. Roscommon.
Ruta (meic Uighilin) - the Route in a district in the north of Co. Antrim and Co. Derry east of the River Bann.
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