Professor Twining, who was the emeritus Quain Professor of Jurisprudence at University College London and also taught for a number of years at the University of Miami, was well-known for his intellectual biography of Karl Llewellyn (with whom he studied at Chicago in the 1950s) and for his work on evidence law, among other topics. There is a nice memorial notice here. Comments are open for remembrances from those who knew Professor Twining or who would like to comment on the significance of his work.