Born on 22 August 1923 at Milan in Italy, the second son of Asher Alhadef, a tobacco merchant, and his wife Jeannette Franses. He was educated at Bromsgrove School, Birmingham, and at Worcester College (1942-47) and the Radcliffe Infirmary, Oxford, qualifying in 1947. He held resident posts at Nottingham Hospital and the Royal Northern Hospital, London, and then served as a graded surgical specialist with the rank of Captain in the RAMC 1950-52. He took the Fellowship in 1952, after working under Ian Aird at the Postgraduate Medical School at Hammersmith Hospital. He recalled with gratitude the teaching and influence of Gabriel Franklin, Hamilton Bailey and Selwyn Taylor, as well as Professor Aird. Alhadeff emigrated to South America, where he became medical officer to the British Embassy at Buenos Aires and personal physician to the British Ambassador to Argentina. He married in 1949 Miss Soriano, who survived him with their three sons. His recreations were yachting and painting; he also undertook astronomical calculations. Alhadeff died on 7 September 1973 aged fifty. Publications: Clinical aspects of filariasis. *J Trop Med Hyg* 1955, 58: 173-179. A clinico-pathological study of thyroid carcinoma. *Brit J Surg* 1956,43: 617.