O’Beollan: Abbey
O’Brien: Abbey, Carran, Clareabbey, Drumcliff, Inishcaltra, Killinaboy, Kilmaleery, Kilnasoolagh, Kilrush, Rath, Tulla
O’Cahan: Moyarta
O’Callaghan: Drumcliff, Tulla
O’Carroll: Tulla. See also Carroll
O’Conor / O’Connor: Abbey, Kilfenora, Kilrush. See also Connor
O’Dally: Abbey. See also Daly
O’Dea: Clareabbey, Dysert
O’Dempsey: Killinaboy
O’Donnell: Bunratty, Kilfearagh,
O’Doogan: Killokennedy. See also Doogan
O’Dowd: Abbey
O’Flanagan: Killinaboy. See also Flanagan
O’Gorman: Killinaboy, Kilmurry Ibrican, Quin
O’Grady: Abbey, Inishcaltra, Kiltenanlea. See also Grady
O’Harte: Tulla
O’Haugh: Clareabbey
O’Hehir: Drumcliff, Killinaboy. See also Hehir
O’Honeen: Moyarta
O’Kane: Killard
O’Keeffe: Killone
O’Kerin / O’Kerine: Ruan. See also Kerin
O’Loghlen / O’Loughlen / O’Loughlin: Abbey, Killinaboy, Kilshanny
O’Meara: Feakle
O’Neilan / O’Nellane: Killinaboy. See also Nealan
Organ: Feakle
O’Shaughnessy: Clondagad
O’Shea: Clondagad
Owen: Killinaboy

Palliser: Bunratty, Kilnasoolagh
Palmer: Tulla
Paterson: Kilrush
Payne: Drumcliff
Pennefather: Drumcliff
Percival: Drumcliff
Phelps: Kiltenanlea
Pollock: Kilnasoolagh
Ponsonby: Killaloe
Power: Drumcliff, Killinaboy
Pullein: Kilfenora
Purcell: Quin, Feakle
Purdon: Killaloe

Quailly / Queely: Clondagad, Killilagh
Quin / Quinn: Abbey, Clareabbey, Drumcliff, Kiltenanlea, Tomfinlough

Read: Tulla
Redfield: Killaloe
Roan: Kilfinaghty, Killaloe
Roberts: Tulla
Roche: Killone, Tulla
Rochford: Kilfinaghty
Ronan: Clondagad
Ross / Rosse: Clondagad
Ross-Lewin: Clondagad
Roubilliac: Kilnasoolagh
Rouine: Feenagh
Ryan: Drumcliff, Kiltenanlea, Tulla

St John: Kilseily
Sandiford: Tulla
Scales: Kilfearagh
Scanlan / Scanlon: Quin, Clondagad
Scott: Killaloe, Tulla
Sexton: Clondagad
Shannon: Kilmurry Ibrican, Tulla
Shaw: Tulla
Sims: Drumcliff
Sinclair: Tulla
Singleton: Quin
Smith: Bunratty, Clondagad
Spaight: Quin, Tulla
Spellissy: Killinaboy
Stackpoole / Stacpole / Stacpoole: Drumcliff, Kiltenanlea, Tulla
Stamer: Quin, Clareabbey
Strafford: Drumcliff
Stuart: Abbey
Studdert: Kilnasoolagh, Kilrush
Sullivan: Feakle
Synge: Dysert

Taylor: Tulla
Thynn / Thynne: Killilagh, Kilshanny
Tobin: Kiltenanlea
Tool: Abbey
Torpy: Clareabbey
Tresham: Kilnamaheen
Trousdell: Drumcliff
Tuesden: Kilrush
Tuohy: Feakle

Urdin: Abbey

Vandeleur: Kilrush
Verlin / Virlin: Tulla
Vincent: Kiltenanlea

Wall: Clareabbey, Kilseily
Waters: Clondagad
Watson: Kilrush, Tulla
Weldon: Tulla
Welsh: Dysert, Kiltenanlea
Westropp: Drumcliff, Kiltenanlea, Tulla
Wheler: Tulla
Whitehead: Tulla
Whitestone: Clondagad
Whitty: Kilnamaheen, Kilrush
Wilson: Kilrush, Kiltenanlea
Wolverton: Killinaboy
Worrall: Killaloe
Woulfe: Drumcliff

Young: Drumcliff, Kilnasoolagh, Quin, Tulla