Basic Details Surname Hearn Forenames Hannibal Henry Gender Male Information stated on memorial War First World War (1914-1918) Served or died Died Service number 130965 Honours Battle of Coronel Notes No known grave (buried at sea) - commemorated on Portsmouth Naval Memorial, Hampshire, Panel 1. Primary Service As stated on memorial Service (Primary - Stated) Navy (RN) Unit (Primary - Stated) Royal Navy Rank / Title (Primary - Stated) Petty Officer (Coastguard) Our References Service (Primary - Our reference) Royal Navy Unit (Primary - Our reference) HMS Monmouth Rank / Title (Primary - Our reference) Petty Officer Death and Burial details Year of death 1914 Month of death November Day of death 1 Age at death 19 Manner of death as stated Unknown Manner of death reference Missing