The most important is a painting by John Phillips, which Mr Ondaatje found in a private Australian collection, of Sir Richard Burton in Afghan dress before his ill-fated journey to find the source of the Nile.

ECONOMIST: Museum sponsorship

Professor Stead also spoke about Houston's close friendships with fellow Welsh actors Richard Burton and Sir Stanley Baker, his love of the Rhondda and how his classic good looks, warm spirit and openness endeared him to cinema goers of all ages.

BBC: Film actor Donald Houston's Rhondda blue plaque honour