| Bedfordshire | 0 |
| Buckinghamshire | 0 |
| Berkshire | 0 |
| Cambridgeshire | 0 |
| Channel Islands | 0 |
| Cheshire | 1 |
| Cornwall | 8 |
| Cumberland | 0 |
| Derbyshire | 0 |
| Devon | 1 |
| Dorset | 0 |
| Durham | 19 |
| Essex | 2 |
| Gloucestershire | 0 |
| Hampshire | 0 |
| Herefordshire | 0 |
| Hertfordshire | 0 |
| Huntingdonshire (and Rutland) | 1 |
| Isle of Man | 0 |
| Kent | 2 |
| Lancashire | 1 |
| Leicestershire | 0 |
| Lincolnshire | 6 |
| London | 0 |
| Middlesex | 0 |
| Northumberland | 6 |
| Norfolk | 0 |
| Northamptonshire | 0 |
| Nottinghamshire | 4 |
| Oxfordshire | 0 |
| Rutland (and Huntingdonshire) | 1 |
| Shropshire | 0 |
| Suffolk | 0 |
| Somerset | 0 |
| Surrey | 0 |
| Sussex | 0 |
| Staffordshire | 1 |
| Warwickshire | 12 |
| Westmorland | 0 |
| Wiltshire | 0 |
| Worcestershire | 0 |
| Yorkshire | 10 |
| Anglesey | 0 |
| Brecknockshire | 0 |
| Cardiganshire | 0 |
| Carnarvonshire | 0 |
| Carmarthenshire | 0 |
| Denbighshire | 0 |
| Flintshire | 0 |
| Glamorgan | 0 |
| Merionethshire | 0 |
| Montgomeryshire | 0 |
| Monmouthshire | 0 |
| Pembrokeshire | 0 |
| Radnorshire | 0 |
| Profession | Census Frequency |
|---|---|
| School | 8 |
| Engineer Fitter | 3 |
| Boat Builder | 2 |
| Insurance Agenet | 1 |
| Butcher | 1 |
| Farmer And Butcher | 1 |
| Farmers Daughter | 1 |
| Farmers Son Working On Farm | 1 |
| Car Driver Tramway | 1 |
| Coal Vendor | 1 |
| Commercial Clerk | 1 |
| Locomotive Cleaner Railway | 1 |
| Postal Clerk (post Office) | 1 |
| Umbrella Maker | 1 |
| Coal Miner | 1 |
| Coal Miner Hewer & Putter | 1 |
| Joiner | 1 |
| Plumber's Apprentice | 1 |
| Brass Dresser | 1 |
| Filer | 1 |
| Hydes Bird Seed Co | 1 |
| Manufacture Worker | 1 |
| Plate Worker | 1 |
| Polisher | 1 |
| Van Salesman | 1 |
| Name | Census Frequency |
|---|---|
| Mary Trevethick | 90 |
| William Trevethick | 85 |
| John Trevethick | 81 |
| Elizabeth Trevethick | 76 |
| Thomas Trevethick | 71 |
| Richard Trevethick | 57 |
| Jane Trevethick | 39 |
| Eliza Trevethick | 30 |
| Ann Trevethick | 26 |
| James Trevethick | 26 |
| Joseph Trevethick | 22 |
| Sarah Trevethick | 22 |
| Charles Trevethick | 21 |
| Annie Trevethick | 20 |
| George Trevethick | 20 |
| Henry Trevethick | 19 |
| Grace Trevethick | 18 |
| Alfred Trevethick | 9 |
| Emma Trevethick | 9 |
| Samuel Trevethick | 9 |
| Anne Trevethick | 8 |
| Arthur Trevethick | 8 |
| Fanny Trevethick | 8 |
| Francis Trevethick | 8 |
| Frederick Trevethick | 8 |
| Rank | Surname | Match | Census Frequency |
|---|---|---|---|
| 1 | Trevethick | 100% | 1,104 |
| 2 | Trevithick | 90% | 665 |
The surname Trevethick is the most popular version of all its varients