Llewelyn Prosser 
Born: Q1 1872 in Merthyr Tydfil, Glamorgan, Wales (11a 447)Llewelyn's Family
Spouse: Catherine Phillips married 17 May 1910 in St Issell's, Pembrokeshire (Narbeth 11a 1749)
Llewelyn's Heritage
Parents: David Prosser, Jane Evans
Siblings: William Prosser, Cathrine Prosser, John Prosser, Mary Jane Prosser, Sarah Ann Prosser, Bessie Prosser, Rachel Hannah Prosser, Edith Prosser
1901 Census 18, Big Row, Aberdare, Merthyr Tydfil, Glamorgan
| Name | Position | Age | Where Born | Occupation | BK No |
| Jane Prosser | Head | 51 | Aberdare | 891 | |
| Llewelyn Prosser | Son | 28 | Aberdare | Coal Miner | 894 |
| John Prosser | Son | 26 | Aberdare | Coal Miner | 895 |
| Mary Jane Prosser | Daur | 25 | Aberdare | Draper's Asst | 896 |
| Bessie Prosser | Daur | 18 | Aberdare | School Teacher | 1676 |
| Rachel Hannah Prosser | Daur | 14 | Aberdare | 1677 | |
| Edith Prosser | Daur | 13 | Aberdare | 1678 |
1891 Census 19 Big Row, CefnPennar, Aberdare
| Name | Position | Age | Where Born | Occupation | BK No |
| Jane Prosser | Head | 41 | Aberdare | Housekeeper | 891 |
| William Prosser | Son | 23 | Aberdare | Haulier in Colliery | 892 |
| Cathrine Prosser | Daur | 21 | Aberdare | 893 | |
| Llewelyn Prosser | Son | 20 | Aberdare | Coal Miner | 894 |
| John Prosser | Son | 17 | Aberdare | Coal Miner | 895 |
| Mary J Prosser | Daur | 16 | Aberdare | 896 | |
| Sarah Ann Prosser | Daur | 11 | Aberdare | 897 | |
| Bessie Prosser | Daur | 9 | Aberdare | 1676 | |
| Rachel H Prosser | Daur | 5 | Aberdare | 1677 | |
| Edith Prosser | Daur | 3 | Aberdare | 1678 |
1881 Census 12 Crown Row, Aberdare RG 11 5325 51 32
| Name | Position | Age | Where Born | Occupation | BK No |
| David Prosser | Head | 34 | Abercanaid | Coal Miner | 558 |
| Jane Prosser | Wife | 30 | Aberdare | 891 | |
| William Prosser | Son | 12 | Abercanaid | Door Boy | 892 |
| Cathrine Prosser | Daur | 11 | Abercanaid | Scholar | 893 |
| Llewelyn Prosser | Son | 9 | Abercanaid | Scholar | 894 |
| John Prosser | Son | 6 | Abercanaid | Scholar | 895 |
| Mary Prosser | Daur | 5 | Abercanaid | Scholar | 896 |
| Sarah Prosser | Daur | 9m | Abercanaid | 897 |