Simon Bussy was an art critic and artist, and the husband of Dorothea Strachey (later Lady Strachey).
After training in Paris, he moved to London in 1901. He worked as an art teacher and painter, mostly of portraits. He was well-respected as an art critic. He is mentioned in JW's correspondence in 1903.
Obituary, Times, London, 1 June 1954, p. 8.