original_query: Who were some of the artist's professional ties in the field of oil painting and portrait painting?
query: Who were some of David Jagger's professional ties in the field of oil painting and portrait painting?
answer: David Jagger was a member of the Royal Institute of Oil Painters (R.O.I.) and the Royal Society of Portrait Painters (R.P.). He regularly exhibited at the Summer Exhibition at the Royal Academy and the Royal Society of British Artists (R.B.A.).