| Name and Surname | Relationship | Age - Years & Months | Marriage or Orphanhood | Birthplace | Nationality | Education | Occupation | Employment | Place of Work | Number & Ages of Living Children under 16 | Language Spoken |
| William Thomas Sibley | Head | 31 - 10 [sic] | Married | Monmouthshire Mynyddislwyn | Coal Hewer | Bowditch Bros |
Gelly Colliery Blackwood | 2 Ages 2 & 3 | Englsh | ||
| Annie Sibley | Wife | 30 - 0 [sic] | Married | Herefordshire Pembridge | Home duties | English | |||||
| Frederick Sibley | Son | 3 - 7 | Both Alive | Monmouthshire Mynyddislwyn P | English | ||||||
| William Sibley | Son | 2 - 0 [sic] | Both Alive | Monmouthshire Mynyddislwyn P | English |
| Address | 76 Derwendeg Ave, Pengam |
| Place | Bedwellty, Monmouthshire |
| Registration District | Bedwellty |
| Registration Sub-district | Rhymney Valley |
| Enumeration District | 4 |
| Schedule | 180 |
Source: Ancestry - 1921 Census