Basic Details Surname Mattin Forenames Henry Sidney Gender Male Information stated on memorial War First World War (1914-1918) Served or died Died Service number 5707 Primary Service As stated on memorial Unit (Primary - Stated) County of London Regt Rank / Title (Primary - Stated) Pte Our References Service (Primary - Our reference) British Army Unit (Primary - Our reference) 23rd Battalion London Regiment (County of London) Rank / Title (Primary - Our reference) Private Death and Burial details Country of death France Country of burial France Cemetery Thiepval Memorial Year of death 1916 Month of death September Day of death 16 Age at death 27 Manner of death as stated not stated on memorial