Basic Details Surname Joslin Forenames Robert 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) HMS Marmion Our References Service (Primary - Our reference) Royal Navy Unit (Primary - Our reference) HMS Marmion Death and Burial details Year of death 1917 Month of death October Day of death 21 Manner of death as stated Lost at sea Manner of death reference Killed in Action Personal Details Relationships Son of Robert C Joslin and his wife Mabel Elizabeth.