| Bedfordshire | 0 |
| Buckinghamshire | 0 |
| Berkshire | 2 |
| Cambridgeshire | 4 |
| Channel Islands | 0 |
| Cheshire | 9 |
| Cornwall | 0 |
| Cumberland | 0 |
| Derbyshire | 0 |
| Devon | 1 |
| Dorset | 0 |
| Durham | 1 |
| Essex | 1 |
| Gloucestershire | 1 |
| Hampshire | 1 |
| Herefordshire | 0 |
| Hertfordshire | 1 |
| Huntingdonshire | 0 |
| Isle of Man | 0 |
| Kent | 1 |
| Lancashire | 26 |
| Leicestershire | 0 |
| Lincolnshire | 0 |
| London | 13 |
| Middlesex | 6 |
| Northumberland | 8 |
| Norfolk | 0 |
| Northamptonshire | 0 |
| Nottinghamshire | 0 |
| Oxfordshire | 0 |
| Rutland | 0 |
| Shropshire | 0 |
| Suffolk | 0 |
| Somerset | 0 |
| Surrey | 10 |
| Sussex | 0 |
| Staffordshire | 4 |
| Warwickshire | 0 |
| Westmorland | 0 |
| Wiltshire | 0 |
| Worcestershire | 0 |
| Yorkshire | 4 |
| Anglesey | 0 |
| Brecknockshire | 0 |
| Cardiganshire | 0 |
| Carnarvonshire | 0 |
| Carmarthenshire | 0 |
| Denbighshire | 0 |
| Flintshire | 0 |
| Glamorgan | 13 |
| Merionethshire | 0 |
| Montgomeryshire | 0 |
| Monmouthshire | 1 |
| Pembrokeshire | 0 |
| Radnorshire | 0 |
| Profession | Census Frequency |
|---|---|
| Instrument Maker | 3 |
| Scholar | 2 |
| Domestic Work | 2 |
| Student | 2 |
| Law Clerk | 2 |
| Tailoress | 2 |
| Collier Coal | 2 |
| Journalist & Author | 1 |
| Book Keeper House Agent | 1 |
| Insurance Agent | 1 |
| Stoker Navy Men 2nd Class | 1 |
| Priest Church Of England | 1 |
| Religious | 1 |
| Apprentice Architect | 1 |
| Apprentice Fitter & Turner Ordnance | 1 |
| Foreman Fitter Ordnance | 1 |
| Shoeingsmith Royal Garrison Artillery | 1 |
| Clerk | 1 |
| Retired Civil Servant | 1 |
| Shipping Agent | 1 |
| Coal Hewer | 1 |
| Eninge Stoker E D | 1 |
| Farm Labourer Agricultural Labourer | 1 |
| House Wife | 1 |
| Pare Of Aged Poor & Orphan Girls | 1 |
| Name | Census Frequency |
|---|---|
| Mary Oreilly | 57 |
| John Oreilly | 47 |
| Thomas Oreilly | 33 |
| Elizabeth Oreilly | 25 |
| William Oreilly | 25 |
| James Oreilly | 23 |
| Michael Oreilly | 21 |
| Margaret Oreilly | 20 |
| Ellen Oreilly | 17 |
| Annie Oreilly | 15 |
| Catherine Oreilly | 15 |
| Patrick Oreilly | 13 |
| Philip Oreilly | 12 |
| Sarah Oreilly | 12 |
| Edward Oreilly | 10 |
| Joseph Oreilly | 10 |
| Charles Oreilly | 8 |
| Bernard Oreilly | 7 |
| Bridget Oreilly | 7 |
| Francis Oreilly | 6 |
| George Oreilly | 6 |
| Henry Oreilly | 6 |
| Hugh Oreilly | 6 |
| Jane Oreilly | 6 |
| Peter Oreilly | 6 |
| Rank | Surname | Match | Census Frequency |
|---|---|---|---|
| 1 | Reilly | 86% | 9,119 |
| 2 | Relly | 71% | 2,374 |
| 3 | Rolley | 43% | 1,852 |
| 4 | Rilley | 57% | 1,218 |
| 5 | Rielly | 57% | 769 |
| 6 | O'reilly | 88% | 747 |
| 7 | Rilly | 71% | 713 |
| 8 | Oreilly | 100% | 671 |
| 9 | Ralley | 43% | 607 |
| 10 | Relley | 57% | 581 |
| 11 | Rolly | 57% | 566 |
| 12 | Reilley | 71% | 475 |
| 13 | Rully | 57% | 385 |
| 14 | Rally | 57% | 314 |
| 15 | Rulley | 43% | 177 |
| 16 | Railly | 71% | 171 |
The surname Oreilly is the 8th most popular variant of Reilly.