Dan Lenaghan was born on 5 September 1925 in Creswick, Victoria, Australia, the son of Richard Lenaghan, a farmer, and Josephine, née Downey. Dan was the eldest of nine children, three others of whom entered the medical profession. He was educated at the state primary school in Tourello, before a junior government scholarship took him to St Patrick's College, Ballarat, where he became school captain and Dux of College, and from which he won the Newman Exhibition and a university free place scholarship to the University of Melbourne. He graduated MB BS in 1949 and served as junior and senior resident medical officer at Vincent's Hospital, then as senior demonstrator in anatomy, and finally clinical supervisor at St Vincent's. He gained the MS (Melbourne) and the FRACS in 1954, before coming to London to work as a senior registrar at the Royal Marsden Hospital and pass the FRCS in 1955. He then took up urology as a specialty, and became surgical registrar to J D Fergusson at the West Middlesex Hospital, and a Fellow at St Paul's, at a time when Fergusson was probably the outstanding exponent of open prostatectomy in London. From 1957 to 1958 Dan went to work in Bradford under Henry Hamilton Stewart, then an expert with cold punch prostatectomy, before returning to the staff of St Vincent's Hospital as an assistant urologist in 1958, becoming senior urologist in 1988. He wrote extensively with Douglas Stephens on duplex ureter and reflux, and later took up an interest in urodynamics, combining this with a continuing series of experimental studies on reflux, in which he became a world authority. Dan was a constant attender at international urological meetings, especially of BAUS, and became President of the Urological Society of Australasia from 1983 to 1984. He married albeit late in life, but very happily, Christine Mary Lethbridge of Bristol in 1971. They had three daughters - Catherine, Rosemary and Joanna (a medical student) - and one son, Daniel. Among his many hobbies he included vintage cars, gardening and Biblical studies. In fact to his many friends Dan was a deeply sincere and unusually modest man, who concealed his immense ability and learning behind a genuine humility. He died on 6 April 1994, survived by his wife and family.