“It’s an impressive picture,” he told the Sunday Telegraph…. But Hugh Belsey, a world authority on Gainsborough, will be publishing it for the first time in the catalogue raisonné – the definitive study – of Gainsborough’s portraits and copies of Old Master works, to be published by Yale University Press next month. The Cathedral had believed that it was by Gainsborough’s nephew and sole apprentice, Gainsborough Dupont. The hand of one of Britain’s foremost 18th-century masters has been identified in a lifesize portrait that has for years been relegated to a darkened, high wall within the verger’s vestry. Hereford Cathedral has discovered a painting by Thomas Gainsborough that it did not know it had.