| Bedfordshire | 0 |
| Buckinghamshire | 0 |
| Berkshire | 0 |
| Cambridgeshire | 0 |
| Channel Islands | 0 |
| Cheshire | 0 |
| Cornwall | 0 |
| Cumberland | 0 |
| Derbyshire | 0 |
| Devon | 0 |
| Dorset | 0 |
| Durham | 0 |
| Essex | 0 |
| Gloucestershire | 0 |
| Hampshire | 2 |
| Herefordshire | 0 |
| Hertfordshire | 0 |
| Huntingdonshire | 0 |
| Isle of Man | 0 |
| Kent | 1 |
| Lancashire | 0 |
| Leicestershire | 0 |
| Lincolnshire | 0 |
| London | 0 |
| Middlesex | 0 |
| Northumberland | 0 |
| Norfolk | 0 |
| Northamptonshire | 0 |
| Nottinghamshire | 0 |
| Oxfordshire | 0 |
| Rutland | 0 |
| Shropshire | 0 |
| Suffolk | 0 |
| Somerset | 0 |
| Surrey | 0 |
| Sussex | 1 |
| Staffordshire | 0 |
| Warwickshire | 0 |
| Westmorland | 0 |
| Wiltshire | 0 |
| Worcestershire | 0 |
| Yorkshire | 0 |
| Anglesey | 0 |
| Brecknockshire | 0 |
| Cardiganshire | 0 |
| Carnarvonshire | 0 |
| Carmarthenshire | 1 |
| Denbighshire | 5 |
| Flintshire | 0 |
| Glamorgan | 6 |
| Merionethshire | 0 |
| Montgomeryshire | 0 |
| Monmouthshire | 0 |
| Pembrokeshire | 0 |
| Radnorshire | 0 |
| Profession | Census Frequency |
|---|---|
| Scholar | 3 |
| Private 77 Reg Foot | 1 |
| Surgeon | 1 |
| Publican Wife | 1 |
| Shamrock Inn | 1 |
| Labourer | 1 |
| Agricultural Labourer | 1 |
| Name | Census Frequency |
|---|---|
| Mary Osullivan | 63 |
| John Osullivan | 54 |
| James Osullivan | 36 |
| Michael Osullivan | 31 |
| Daniel Osullivan | 29 |
| Patrick Osullivan | 29 |
| Margaret Osullivan | 26 |
| Timothy Osullivan | 25 |
| William Osullivan | 23 |
| Catherine Osullivan | 20 |
| Elizabeth Osullivan | 17 |
| Ellen Osullivan | 17 |
| Thomas Osullivan | 17 |
| Annie Osullivan | 15 |
| Jeremiah Osullivan | 14 |
| Kate Osullivan | 12 |
| Denis Osullivan | 11 |
| Agnes Osullivan | 8 |
| Cornelius Osullivan | 8 |
| Edward Osullivan | 8 |
| Florence Osullivan | 8 |
| Hannah Osullivan | 8 |
| Kathleen Osullivan | 8 |
| Bridget Osullivan | 7 |
| Francis Osullivan | 7 |
| Rank | Surname | Match | Census Frequency |
|---|---|---|---|
| 1 | Sullivan | 89% | 80,965 |
| 2 | O'sullivan | 90% | 950 |
| 3 | Osullivan | 100% | 815 |
| 4 | Sallivan | 78% | 181 |
| 5 | Sullivian | 78% | 154 |
| 6 | Sulliven | 78% | 137 |
| 7 | Sullevan | 78% | 117 |
| 8 | Sullivon | 78% | 110 |
| 9 | Sullvan | 78% | 108 |
The surname Osullivan is the 3rd most popular variant of Sullivan.