Basic Details Surname Master Forenames Harold Onslow Gender Male Information stated on memorial War First World War (1914-1918) Served or died Died Honours RNR Primary Service As stated on memorial Unit (Primary - Stated) HMS Indefatigable Rank / Title (Primary - Stated) Lieutenant Our References Service (Primary - Our reference) Royal Navy Unit (Primary - Our reference) HMS Indefatigable Rank / Title (Primary - Our reference) Lieutenant