Capt. H. R. H. O'Brien |
| Roll of Honour Ref. | 4494 |
| Memorial Ref. | 8191 |
| Surname | O'Brien |
| Initials | H. R. H. |
| Rank | Capt. |
| Ship or Regiment | Royal Field Artillery |
| Date of Death | |
| Age | |
| Place of Death | |
| Remarks | |
| Parish | Instow |
| Memorial Type | War Memorial |
| Memorial Location | Instow, St John the Baptist Churchyard |
| Contributor | PB |