| Name | Joseph O'CALLAGHAN |
| Rank/Number | Hired Skilled labourer |
| Regiment/Unit | HM Dockyard HMS Princess Irene / secondary unit Sheerness |
| Enlisted | |
| Age/Date of death | 24 / 27 May 1915 |
| How died/Theatre of war | / |
| Residence at death | |
| Cemetery | Chatham Naval Memorial, Kent |
| Grave Reference | 15 |
| Location of memorial | Chalfont St Peter, St Joseph |
| Date/Place of birth | 18 Sep 1891 / Brentwood, Essex |
| Date/Place of baptism | |
| Occupation of Casualty | bookbinder |
| Parents/Occupation | Patrick (late) & Sarah Agnes O'Callaghan / |
| Parents' Address | 56 St Pauls Rd, Tottenham, London |
| Wife | |
| Wife's Address | |
| Notes | explosion in harbour. See Google for more details. Mother nee Pollard |