Basic Details Surname Hartley Forenames James O Gender Male Information stated on memorial War First World War (1914-1918) Served or died Died Primary Service As stated on memorial Service (Primary - Stated) Royal Navy Rank / Title (Primary - Stated) Seaman Our References Service (Primary - Our reference) Royal Navy Rank / Title (Primary - Our reference) Seaman Death and Burial details Year of death 1918 Month of death March Day of death 26 Age at death 23 Manner of death as stated Died at sea Manner of death reference Killed in Action