Probably Arthur Hamilton Lee, Viscount Lee of Fareham (died 1947); his widow, Viscountess Lee of Fareham (née Ruth Moore), by October1960, when she sold it to Agnew’s, London [email from Jane E. H. Hamilton dated 26 November 2002, in curatorial file]; sold by Agnew's to Dr. John J. Ireland (died 1968), Chicago, December 1960 [according to email cited above]; bequeathed by him to the Art Institute, 1968.