| Bedfordshire | 0 |
| Buckinghamshire | 0 |
| Berkshire | 0 |
| Cambridgeshire | 0 |
| Channel Islands | 0 |
| Cheshire | 10 |
| Cornwall | 0 |
| Cumberland | 0 |
| Derbyshire | 0 |
| Devon | 1 |
| Dorset | 0 |
| Durham | 0 |
| Essex | 9 |
| Gloucestershire | 2 |
| Hampshire | 1 |
| Herefordshire | 0 |
| Hertfordshire | 0 |
| Huntingdonshire | 0 |
| Isle of Man | 0 |
| Kent | 0 |
| Lancashire | 12 |
| Leicestershire | 0 |
| Lincolnshire | 7 |
| London | 20 |
| Middlesex | 1 |
| Northumberland | 1 |
| Norfolk | 0 |
| Northamptonshire | 0 |
| Nottinghamshire | 0 |
| Oxfordshire | 1 |
| Rutland | 0 |
| Shropshire | 0 |
| Suffolk | 0 |
| Somerset | 0 |
| Surrey | 1 |
| Sussex | 0 |
| Staffordshire | 2 |
| Warwickshire | 0 |
| Westmorland | 0 |
| Wiltshire | 0 |
| Worcestershire | 0 |
| Yorkshire | 1 |
| Anglesey | 1 |
| Brecknockshire | 0 |
| Cardiganshire | 0 |
| Carnarvonshire | 0 |
| Carmarthenshire | 1 |
| Denbighshire | 0 |
| Flintshire | 0 |
| Glamorgan | 18 |
| Merionethshire | 0 |
| Montgomeryshire | 0 |
| Monmouthshire | 0 |
| Pembrokeshire | 0 |
| Radnorshire | 0 |
| Profession | Census Frequency |
|---|---|
| Pupil Teacher Student | 4 |
| General Labourer | 3 |
| Iron Worker | 3 |
| Dock Labourer | 2 |
| Telegraphist | 2 |
| Clerk Civil Service | 1 |
| Draper Assistant | 1 |
| Examining Officer H M Customs | 1 |
| Private Secretary | 1 |
| Railway Porter | 1 |
| School Mistress | 1 |
| Soldier | 1 |
| Private Infantry | 1 |
| Clerk Inland Revenue | 1 |
| Community | 1 |
| Gas Stoker | 1 |
| House Keeper | 1 |
| Shop Keeper General Stores | 1 |
| Stoker | 1 |
| Colliery Agent Mineman | 1 |
| Colliery Boiler Stoker E D | 1 |
| Engine Fitter | 1 |
| General Servant Domestic | 1 |
| Officer Of Customs Civ | 1 |
| Post Office Clerk Civ | 1 |
| Name | Census Frequency |
|---|---|
| Mary O'sullivan | 68 |
| John O'sullivan | 64 |
| Daniel O'sullivan | 33 |
| Michael O'sullivan | 30 |
| Patrick O'sullivan | 29 |
| Margaret O'sullivan | 28 |
| Ellen O'sullivan | 25 |
| William O'sullivan | 23 |
| Catherine O'sullivan | 22 |
| Timothy O'sullivan | 19 |
| James O'sullivan | 18 |
| Thomas O'sullivan | 18 |
| Joseph O'sullivan | 17 |
| Kathleen O'sullivan | 15 |
| Elizabeth O'sullivan | 14 |
| Eugene O'sullivan | 14 |
| Denis O'sullivan | 13 |
| Jane O'sullivan | 13 |
| Jeremiah O'sullivan | 13 |
| Alice O'sullivan | 12 |
| Cornelius O'sullivan | 12 |
| Annie O'sullivan | 11 |
| Nora O'sullivan | 11 |
| Eileen O'sullivan | 10 |
| Florence O'sullivan | 10 |
| Rank | Surname | Match | Census Frequency |
|---|---|---|---|
| 1 | O'sullivan | 100% | 950 |
| 2 | Osullivan | 90% | 815 |
The surname O'sullivan is the most popular version of all its varients