| Census: | 1841 |
| County: | Cornwall (CON) |
| District: | Penwith |
| Civil Parish: | St Hilary |
| Piece: | 144 |
| Enumeration District: | 3 |
| Folio: | 45 |
| Page: | 14 |
| House Number: | |
| House or Street Name: | Trevenna |
| Surname | Forenames | Sex | Age | Occupation | Birth County | Notes |
| JACKA | John | M | 64 | Tin Miner | Cornwall | |
| JACKA | Elizabeth | F | 44 | Out of County | ||
| JACKA | Alice | F | 15 | Cornwall | ||
| JACKA | Richard | M | 13 | Miner Copper | Cornwall | |
| JACKA | Bridget | F | 11 | Cornwall | ||
| JACKA | Sally | F | 9 | Cornwall | ||
| JACKA | Jane | F | 7 | Cornwall |