Orpen studied in Dublin and then at London’s Slade School, becoming one of the most successful, and most honored, portrait painters of his generation. Here, in one of his numerous forays into self portraiture, Orpen (who was known for his wit and humor) depicts himself at work in his Chelsea studio, gesturing mock-heroically as his model yawns. (http://www.mfa.org/collections/object/summer-afternoon-artist-in-his-studio-with-a-model-33311) The MFA site gives the date as 1913.