He subsequently interned at the Peggy Guggenheim Collection in Venice, before studying for a master's degree at the Bibliotheca Hertziana in Rome and the University of Melbourne.
He was awarded a Fulbright scholarship in 1994 to undertake further study at the New York University Institute of Fine Arts.
He curated and wrote the catalogues for exhibitions including Bohemian London and Love & Death: Art in the Age of Queen Victoria.
[4] During this period he acquired significant portraits including those of William Bligh by John Webber[5] and Helena Rubinstein by Graham Sutherland.
[8] In addition to art, Trumble was the author of A Brief History of the Smile (2003) and The Finger: A Handbook (2010), and co-author (with Andrea Wolk Rager) of Edwardian Opulence: British Art at the Dawn of the Twentieth Century.