(b London, 8 Nov. 1910; d London, 24 April 2011).
British art historian and collector. A private scholar with private means, he has devoted himself to the study of 17th-century Italian (particularly Bolognese) painting, and has not only built up a choice collection in this field, but also played a greater part than anyone else in the rehabilitation of such once-scorned artists as the Carracci, Guercino, and Reni. He is also a leading Poussin scholar. His publications include Studies in Seicento Art and Theory (1947), and catalogues of Carracci drawings (1956) and Guercino paintings (1968) and drawings (1969) for major exhibitions of their work in Bologna.