Painter in oil and watercolour, etcher, illuminator and decorator whose landscapes, still lifes and portraits gain their effect with a quiet, understated charm. Born in Richmond, Surrey, Gwynne-Jones went to Bedales, then was articled to study law. In 1913 exhibited a picture on silk at the NEAC, with which he continued to show for many years. Served with distinction in World War I, then attended the Slade School 1919–22, his studies having been interrupted in 1914. Won several first prizes. Became professor of painting at the Royal College of Art in 1923, about the time he began to hold one-man shows. Resigned to join the Slade staff in 1930, staying there until 1959. During World War II he also taught part-time at the fine art department, University of Reading.