| Name | Birth Year | Birth Place |
| Garfield Charles Helyer | 1906 | Pontypridd, Glamorganshire, Wales |
| James Edwin Helyer | 1911 | Pontypridd, Glamorganshire, Wales |
| Lily Maud Helyer | 1880 | Pontypridd, Glamorganshire, Wales |
| Montague Charles Helyer | 1878 | Cardiff, Glamorganshire, Wales |
| Violet Helyer | 1910 | Pontypridd, Glamorganshire, Wales |
| Address | Unknown |
| Parish | Pontypridd |
| Registration District | Pontypridd |
| County | Glamorganshire |
Source: findmypast - 1921 Census