| William Thomas GRENFELL | Head | Married | M | 1877 | 34 | Haulier Underground | Glam Mountain Ash | Cardiff | 32058 | 52 |
| Annie GRENFELL | Wife | Married | F | 1875 | 36 | | Madron Cornwall | Cardiff | 32058 | 52 |
| William Thomas GRENFELL | Son | Single | M | 1899 | 12 | School | Madron Cornwall | Cardiff | 32058 | 52 |
| Grace Annie GRENFELL | Daughter | Single | F | 1900 | 11 | School | Madron Cornwall | Cardiff | 32058 | 52 |
| Christopher GRENFELL | Son | Single | M | 1901 | 10 | School | Glam Hopkinstown | Cardiff | 32058 | 52 |
| Elizabeth Maud GRENFELL | Daughter | Single | F | 1903 | 8 | | Glam Hopkinstown | Cardiff | 32058 | 52 |
| Lilian May GRENFELL | Daughter | Single | F | 1905 | 6 | | Glam Hopkinstown | Cardiff | 32058 | 52 |
| Doris Wilcox GRENFELL | Daughter | Single | F | 1905 | 6 | | Glam Gwaelody Garth | Cardiff | 32058 | 52 |
| Minnie Simons GRENFELL | Daughter | Single | F | 1910 | 1 | | Glam Gwaelody Garth | Cardiff | 32058 | 52 |
| | | | | | | | | | |
| Margaret GRENFELL | Str in Law | Widow | M | 1843 | 68 | No occupation | Cornwall Pendeen | Cardiff | 32166 | 154 |
| | | | | | | | | | |
| Thomas GRENFELL | Head | Married | M | 1865 | 46 | Coal Miner Hewer | Cornwall St Just | Pontypridd | 32330 | 257 |
| Grace Harvey GRENFELL | Wife | Married | F | 1871 | 40 | | Cornwall St Just | Pontypridd | 32330 | 257 |
| John Trelawney GRENFELL | Son | Single | M | 1889 | 22 | Coal Miner Hewer | Cornwall St Just | Pontypridd | 32330 | 257 |
| Rhoda Wingfield GRENFELL | Daughter | Single | F | 1898 | 13 | | Glam Treherbert | Pontypridd | 32330 | 257 |
| Elizabeth Blanche GRENFELL | Daughter | Single | F | 1902 | 9 | | Glam Treherbert | Pontypridd | 32330 | 257 |
| | | | | | | | | | |
| Richard GRENFELL | Head | Married | M | 1859 | 52 | Labourer Below | Cornwall St Ives | Merthyr Tydfil | 32403 | 94 |
| Susannah GRENFELL | Wife | Married | F | 1860 | 51 | | Cornwall St Buryan | Merthyr Tydfil | 32403 | 94 |
| | | | | | | | | | |
| David Rees GRENFELL | Head | Married | M | 1882 | 29 | Coal Mine Hewer | Pembroke Llandilo Talymont | Swansea | 32725 | 371 |
| Beatrice May GRENFELL | Wife | Married | F | 1886 | 25 | | Loughon Loughon Parish | Swansea | 32725 | 371 |
| Eileen GRENFELL | Daughter | Single | F | 1907 | 4 | | Kingsbridge Loughon Parish | Swansea | 32725 | 371 |
| | | | | | | | | | |
| Eiffel Irene GRENFELL | Neice | Single | F | 1891 | 20 | Typist | Glamorgan Swansea | Swansea | 32741 | 210 |
| Mabel Gertrude GRENFELL | Neice | Single | F | 1881 | 30 | Drapers Assistant | Glamorgan Swansea | Swansea | 32741 | 210 |
| | | | | | | | | | |
| Richard John GRENFELL | Head | Married | M | 1854 | 57 | Pattern Maker | Swansea Glamorgan | Swansea | 32741 | 253 |
| Eliza Annie GRENFELL | Wife | Married | F | 1854 | 57 | | Swansea Glamorgan | Swansea | 32741 | 253 |
| Richard John GRENFELL | Son | Single | M | 1889 | 22 | Baker | Swansea Glamorgan | Swansea | 32741 | 253 |
| Dillwyn Llewellyn GRENFELL | Son | Single | M | 1892 | 19 | Baker | Swansea Glamorgan | Swansea | 32741 | 253 |
| Arthur Glyn GRENFELL | Son | Single | | 1896 | 18 | | Swansea Glamorgan | Swansea | 32741 | 253 |
| | | | | | | | | | |
| Ernest GRENFELL | Head | Married | M | 1877 | 34 | Tining At Tinplate Wks | Swansea Glamorgan | Swansea | 32744 | 328 |
| Alice GRENFELL | Wife | Married | F | 1881 | 30 | | Swansea Glamorgan | Swansea | 32744 | 328 |
| Ruth GRENFELL | Daughter | Single | F | 1902 | 9 | | Swansea Glamorgan | Swansea | 32744 | 328 |
| Clifford GRENFELL | Son | Single | M | 1902 | 9 | | Swansea Glamorgan | Swansea | 32744 | 328 |
| Gertrude GRENFELL | Daughter | Single | F | 1904 | 7 | | Swansea Glamorgan | Swansea | 32744 | 328 |
| Ernest John GRENFELL | Son | Single | M | 1907 | 4 | | Swansea Glamorgan | Swansea | 32744 | 328 |
| Ronald GRENFELL | Son | Single | M | 1910 | 11 mths | | Swansea Glamorgan | Swansea | 32744 | 328 |
| | | | | | | | | | |
| David Richard GRENFELL | Head | Married | M | 1876 | 35 | Assurance Agent | Swansea Glamorgan | Swansea | 32771 | 75 |
| Harriett Ellen GRENFELL | Wife | Married | F | 1878 | 33 | Grocer | South Molton Devon | Swansea | 32771 | 75 |
| William Harold GRENFELL | Son | Single | M | 1905 | 6 | | Swansea Glamorgan | Swansea | 32771 | 75 |
| David Hubert GRENFELL | Son | Single | M | 1909 | 2 | | Swansea Glamorgan | Swansea | 32771 | 75 |
| | | | | | | | | | |
| Harriet GRENFIELD | Daughter | Married | F | 1878 | 33 | | York City | Newport | 32029 | 350 |
| Will GRENFIELD | Son in Law | Married | M | | | Plumber | St Ives Cornwall | Newport | 32029 | 350 |
| Harrold GRENFIELD | Grandchild | Single | M | 1905 | 6 | | Bedwas Monmouth | Newport | 32029 | 350 |
| | | | | | | | | | |
| Gabriel Hosking GRENFELL | Boarder | Single | M | 1890 | 21 | Colliery Labourer Below Ground | Cornwall St Just | Newport | 32031 | 5 |
| | | | | | | | | | |
| George H D GRENFELL | Brother-in-Law | Single | M | 1866 | 45 | Sulphate Of Copper Maker | Swansea Glamorgan | Swansea | 32786 | 148 |
| | | | | | | | | | |
| William GRENFELL | Head | Married | M | 1859 | 52 | Coal Mine Hewer | Monmouth Blanavon | Llanelly | 32829 | 233 |
| Anne GRENFELL | Wife | Married | F | 1861 | 50 | | Glam Aberavon | Llanelly | 32829 | 233 |
| W John GRENFELL | Son | Single | M | 1878 | 33 | Fireman Under Colliery | Carmarthen Llangwich | Llanelly | 32829 | 233 |
| Mansel GRENFELL | Son | Single | M | 1885 | 26 | Steel Smelter | Glam Loughor | Llanelly | 32829 | 233 |
| Ivor GRENFELL | Son | Single | M | 1887 | 24 | Coal Mine Hewer | Glam Loughor | Llanelly | 32829 | 233 |
| | | | | | | | | | |
| Phoebe GRENFELL | Married | | | 1879 | 32 | | Flintshire | Holywell | 33933 | 23 |
