| Margaret |
O'Neil |
* 1872 Ireland |
- |
|
| Ellen |
O'Neill |
* 1833 Ireland + 1910 |
O'Neill - Walsh |
|
| John |
O'Neill |
* 1835 Ireland |
- |
|
| Nancy |
O'Neill |
* 1840 Ireland |
- |
|
| Samuel P |
O'Neill |
* 1825 Ireland + 1908 Norristown, Montgomery, Pennsylvania, USA |
Oneill - Oneill |
|
| Liam |
O'Reiley |
* 1934 Ireland + 2014 |
- |
|
| Annie |
O'Rielly |
* 1869 Ireland |
- |
|
| Frank |
O'Rourke |
* 1822 Ireland |
- |
|
| John |
O'Rourke |
* 1832 Ireland + 1872 |
- |
|
| John |
O'Rourke |
* 1832 Ireland + 1872 |
- |
|
| Mary |
O'Rourke |
* 1831 Ireland |
- |
|
| William Thomas |
O'Shaughnessey |
* 1835 Ireland + 1918 Allen County, Indiana, USA |
- |
|
| Dehlia Delia Elizabeth |
O'Shaugnessy |
* 1878 Ireland Irland + 1924 Manhattan 209 East 43rd Str, New York, New York, USA |
- |
|
| James |
O'Shea |
* 1842 Ireland |
- |
|
| Margaret |
O'Shea |
* 1858 Ireland + |
O'Shea - Mannix |
|
| Patrick |
O'Shea |
* 1828 Ireland + |
- |
|
| Noreen |
O'Sullivan |
* 1929 Ireland + 1991 Limerick, Ireland |
O' Sullivan - Hartigan |
|
| Catherine |
O'Toole |
* 1494 Ireland + |
- |
|
| Catherine |
O'Toole |
* 1494 Ireland + |
- |
|
| James B. |
O'Toole |
* 1876 Ireland + 1943 |
- |
|
| James B. |
O'Toole |
* 1876 Ireland + 1943 |
- |
|
| James B. |
O'Toole |
* 1876 Ireland + 1943 |
- |
|
| James B. |
O'Toole |
* 1876 Ireland + 1943 |
- |
|
| John |
O'Toole |
* 1852 Ireland |
- |
|
| Mary |
O'Toole |
* 1800 Ireland + 1883 St Louis, St Louis, Missouri, USA |
- |
|
| Mary |
O'Toole |
* 1844 Ireland + 1903 Wadsworth, Madina, Ohio, United States |
- |
|
| Mercertac (Mouitchertach) |
O'Toole |
* 1090 Meath, Ireland + 1164 Ireland |
- |
|
| Mor Ingen Muirchertaig |
O'toole |
* Ireland |
O'toole - O'morda |
|
| Mouirchertach |
O'toole |
* Ireland |
- |
|
| Adam |
Oberle |
* 1718 Ireland + 1800 Pennsylvania, Somerset, Pennsylvania, United States |
- |
|
| Christina |
Oberle |
* 1720 Ireland + 1800 Pennsylvania, Somerset, Pennsylvania, United States |
- |
|
| Susanna Overly |
Oberle |
* 1750 Ireland + 1790 Rockingham County, VA, USA |
Oberle - Oberle |
|
| Daniel |
OConnell |
* 1816 Ireland + 1899 St Anne, Kankakee, Illinois, United States |
OConnell - OConnell |
|
| Morgan |
OConnell |
* 1739 Ireland + 1809 Ireland |
- |
|
| Anne |
ODear |
* 1740 Ireland + 1764 England |
- |
|
| Anne |
ODear |
* 1740 Ireland + 1764 England |
- |
|
| Arthur C |
Odonnell |
* 1878 Ireland |
Odonnell - |
|
| Edward |
Odonnell |
* 1838 Ireland |
- |
|
| Edward J |
Odonnell |
* 1877 Ireland |
Odonnell - |
|
| Morgan Finn Nicfideach |
Ohailill |
* Ireland + Ireland |
- |
|
| Owen |
OHannon |
* 1790 Ireland + 1860 Horseheads, Chemung County, New York |
- |
|
| Fionn Mafionnloch |
Ohenna |
* Ireland + Ireland |
MacRoighen - |
|
| Sigtryg II Silkbeard |
Olafsson, King of Dublin |
* 980 Dublin, Ireland + 1042 Ireland Battle of, Dublin, Ireland |
- |
|
| Ellen M. |
Oliver |
* 1868 Ireland |
Oliver - McLaughlin |
|
| Ellen M. |
Oliver |
* 1868 Ireland |
Oliver - McLaughlin |
|
| Robert |
Oliver |
* 1818 Ireland |
- |
|
| Robert |
Oliver |
* 1818 Ireland |
- |
|
| Robert J. |
Oliver |
* 1860 Ireland |
Oliver - McLaughlin |
|
| Robert J. |
Oliver |
* 1860 Ireland |
Oliver - McLaughlin |
|
| Thomas J. |
Oliver |
* 1864 Ireland |
Oliver - McLaughlin |
|
