Basic Details Surname Duncan Forenames David Norman Gender Male Information stated on memorial War Military Service Served or died Died Notes Not buried at Mynwent Maeshyfryd Cemetery, "Buried Elsewhere". Primary Service As stated on memorial Unit (Primary - Stated) H. M. S. Thetis Sub-unit (Primary - Stated) Not stated on memorial Our References Unit (Primary - Our reference) HMS Thetis Death and Burial details Country of death Wales Town of death At Sea Year of death 1939 Month of death September Day of death 3 Age at death 27 Manner of death as stated HMS THETIS sank on 1st June 1939 during trials with the loss of all 99 on board.