William Williams 
Born: 1850 in Merthyr Tydfil, Glamorgan, WalesWilliam's Heritage
Parents: Lewis Williams, Kesia Llewelyn
Siblings: Martha Williams, Margaret Williams, Lewis Williams, Kezia Williams, Mary Ann Williams, John Williams, Elizabeth Williams
1861 Census Merthyr Tydfil Lower 4051 37 13 Garden Houses 4
| Name | Position | Age | Where Born | Occupation | BK No |
| Lewis Williams | Head | 37 | Merthyr Tydfil, Glamorgan | Haulier | 505 |
| Kezia Williams | Wife | 34 | Merthyr Tydfil, Glamorgan | 506 | |
| Martha Williams | Daur | 16 | Merthyr Tydfil, Glamorgan | Dock(Canal) labourer | 434 |
| William Williams | Son | 12 | Merthyr Tydfil, Glamorgan | Haulier | 507 |
| Margaret Williams | Daur | 8 | Merthyr Tydfil, Glamorgan | Scholar | 549 |
| Lewis Williams | Son | 5 | Merthyr Tydfil, Glamorgan | Scholar | 585 |
| Kezia Williams | Daur | 1 | Merthyr Tydfil, Glamorgan | 581 |
1851 CENSUS OF ABERCANAID DISTRICT. REF.H.O.107/2458, E.D.6. Piece: 2458 Folio: 210 Schedule:257 Address: ABERCANAID
| Name | Position | Age | Where Born | Occupation | BK No |
| Lewis Williams | Head | 26 | Merthyr Tydfil, Glamorgan | Coke Yard Coal Filler | 505 |
| Kezia Williams | Wife | 24 | Merthyr Tydfil, Glamorgan | 506 | |
| Martha Williams | Daur | 5 | Merthyr Tydfil, Glamorgan | 434 | |
| William Williams | Son | 1 | Merthyr Tydfil, Glamorgan | 507 | |
| Margaret Llewelyn | M in Law | 69 | Margam, Glamorgan | Pauper | 508 |