Complex sentence: He surmounted his disability enough to become president of the Guild of Catholic Artists, vice-president of the Royal Society of Portrait Painters from 1953, an associate of the Royal Academy in 1956, and a full RA in 1967.
Split into simpler sentences: He surmounted his disability enough to become president of the Guild of Catholic Artists, vice-president of the Royal Society of Portrait Painters from 1953. In 1956 he was appointed an associate of the Royal Academy, and a full RA in 1967.