Oak – Owens
1901
N.B.—The number following each name refers to the number of the principal name under which it will he found in the Alphabetical List.
Oates, 1641.
O’Beirne, 206.
O’Boyle, 143.
O’Brallaghan, 145.
O’Brian, 1642.
O’Brine, 1233.
O’Bryan, 1642.
O’Bryen, 1642.
O’Caharney, 975.
O’Caherney, 975.
O’Callahan, 1643.
O’Carroll, 250.
O’Caughan, 1670.
O’Cloghessy, 1645.
O’Clohessy, 1645.
O’Clussey, 1645.
O’Colter, 343.
O’Conner, 320.
O’Conor, 320.
O’Cullane, 304.
O’Currobeen, 333.
O’Curry, 339.
Odarian, 494.
O’Dermott, 457.
O’Dheer, 1657.
O’Diff, 521.
Odlum, 1649.
O’Donnelly, 485.
O’Doogan, 522.
O’Dooghany, 522.
O’Doolan, 505.
O’Dornan, 495.
O’Doud, 1654.
O’Dougherty, 1651.
O’Ferry, 601.
O’Filbin, 1721.
O’Foodhy, 1945.
Ogan, 2070.
O’Garriga, 1668.
Ogilby, 1661.
O’Gilvie, 1661.
O’Gowan, 1897.
O’Gready, 1663.
O’Hallaran, 1665.
O’Halleran, 1665.
O’Halleron, 1665.
O’Hamill, 795.
O’Harra, 1667.
O’Fegan, 1664.
O’Herlihy, 937.
O’Hora, 1667.
O’Hure, 922.
Oins, 1690.
O’Keane, 1670.
O’Keefe, 1671.
O’Keoneen, 961.
O’Kibbon, 695.
O’Kielt, 1896.
O’Kieran, 976.
O’Laverty, 1070.
Olligan, 791.
O’Loughlan, 1674.
O’Mara, 1677.
O’Meally, 1175.
O’Mealue, 1676.
O’Mealy, 1676.
O’Meehon, 1507.
O’Mullane, 1582.
O’Muracha, 1600.
O’Neal, 1678.
Oogan, 2070.
Oolahan, 919.
Oonin, 753.
O’Rafferty, 1760.
Orchard, 1679.
O’Reiley, 1680.
Organ, 915.
O’Rielly, 1680.
O’Roarke, 1682.
O’Ryan, 1831.
Osborne, 1683.
Osbourne, 1683.
Osburne, 1683.
O’Sevnagh, 1944.
O’Shanesy, 1684.
O’Shoughnessy, 1684.
O’Summachan, 1937.
O’Thina, 632.
Ottley, 1688.
Ougan, 2070.
Oulahan, 919.
Oulihan, 919.
Ounihan, 483.
Ovenden, 1689.
Ovington, 1689.