Cyril Henry Oliver was the son of Henry and Edith Caroline Oliver and husband of Mabel Oliver, of North Cheam, Surrey. He served as Stoker 1st Class aboard H.M.S. Dunedin, a ship that, on 15 June 1941, captured the German tanker Lothringen and gathered some highly classified Enigma cipher machines. She went on to capture three Vichy French vessels; the Ville de Rouen, Ville de Tamatave and D'Entrecastreaux. On 24 Nov 1941, Dunedin was east of St. Paul's Rocks, north of Recife, Brazil when she was hit at 15:26 by tow torpedoes from the German U-124. Only 4 officers and 63 men survived the attack and sinking with Oliver commemorated at Portsmouth Naval Memorial.