| Bedfordshire | 0 |
| Buckinghamshire | 0 |
| Berkshire | 0 |
| Cambridgeshire | 0 |
| Channel Islands | 0 |
| Cheshire | 3 |
| Cornwall | 0 |
| Cumberland | 13 |
| Derbyshire | 0 |
| Devon | 0 |
| Dorset | 0 |
| Durham | 0 |
| Essex | 4 |
| Gloucestershire | 0 |
| Hampshire | 4 |
| Herefordshire | 0 |
| Hertfordshire | 0 |
| Huntingdonshire | 0 |
| Isle of Man | 0 |
| Kent | 4 |
| Lancashire | 2 |
| Leicestershire | 1 |
| Lincolnshire | 10 |
| London | 11 |
| Middlesex | 0 |
| Northumberland | 1 |
| Norfolk | 0 |
| Northamptonshire | 0 |
| Nottinghamshire | 0 |
| Oxfordshire | 0 |
| Rutland | 0 |
| Shropshire | 5 |
| Suffolk | 0 |
| Somerset | 0 |
| Surrey | 0 |
| Sussex | 0 |
| Staffordshire | 4 |
| Warwickshire | 0 |
| Westmorland | 0 |
| Wiltshire | 0 |
| Worcestershire | 0 |
| Yorkshire | 15 |
| Anglesey | 0 |
| Brecknockshire | 0 |
| Cardiganshire | 0 |
| Carnarvonshire | 0 |
| Carmarthenshire | 0 |
| Denbighshire | 0 |
| Flintshire | 0 |
| Glamorgan | 0 |
| Merionethshire | 0 |
| Montgomeryshire | 0 |
| Monmouthshire | 0 |
| Pembrokeshire | 1 |
| Radnorshire | 0 |
| Profession | Census Frequency |
|---|---|
| Scholar | 11 |
| Shoe Maker | 2 |
| Stone Mason | 2 |
| Dress Maker | 2 |
| Merchant | 2 |
| Engine Turner | 2 |
| General Servant Domestic | 2 |
| Errand Boy | 2 |
| General Labourer | 2 |
| Coal Miner | 2 |
| Farmer Labourer | 1 |
| Agricultural Labourer | 1 |
| Farmer | 1 |
| General Lauberer | 1 |
| Bycycle Repairer | 1 |
| Engine Worker | 1 |
| Gardener | 1 |
| Mother's Help | 1 |
| Matron | 1 |
| School Maid | 1 |
| Shop Porter | 1 |
| Dairy Maid Domestic | 1 |
| Apprentice Saddler | 1 |
| Book Keeper | 1 |
| Butcher | 1 |
| Name | Census Frequency |
|---|---|
| John Iacson | 14 |
| Mary Iacson | 8 |
| James Iacson | 7 |
| Sarah Iacson | 7 |
| Ann Iacson | 5 |
| Joseph Iacson | 5 |
| Margaret Iacson | 5 |
| Charles Iacson | 4 |
| Elizabeth Iacson | 4 |
| Emma Iacson | 4 |
| George Iacson | 4 |
| Thomas Iacson | 4 |
| William Iacson | 4 |
| Alice Iacson | 3 |
| Hannah Iacson | 3 |
| Herbert Iacson | 3 |
| Lucy Iacson | 3 |
| Alfred Iacson | 2 |
| Anna Iacson | 2 |
| Annie Iacson | 2 |
| Arthur Iacson | 2 |
| Beatrice Iacson | 2 |
| Christopher Iacson | 2 |
| Richard Iacson | 2 |
| Robert Iacson | 2 |
| Rank | Surname | Match | Census Frequency |
|---|---|---|---|
| 1 | Cousin | 33% | 4,986 |
| 2 | Cason | 67% | 3,407 |
| 3 | Causon | 67% | 589 |
| 4 | Cousen | 33% | 520 |
| 5 | Cusin | 33% | 183 |
| 6 | Couson | 50% | 177 |
| 7 | Cousine | 29% | 149 |
| 8 | Iacson | 100% | 148 |
| 9 | Coson | 50% | 138 |
| 10 | Acason | 67% | 118 |
| 11 | Cosin | 33% | 110 |
The surname Iacson is the 8th most popular variant of Cousin.