Basic Details Surname Spencer Forenames William 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) Navy (RN) Unit (Primary - Stated) Submarine B12 Rank / Title (Primary - Stated) Petty Officer Our References Service (Primary - Our reference) Royal Navy Unit (Primary - Our reference) HMS B12 Rank / Title (Primary - Our reference) Petty Officer Death and Burial details Country of death England Year of death 1919 Month of death March Day of death 8 Manner of death as stated Unknown