Sir Thomas Beauchamp-Proctor, 2nd Bt., (1756-1827) was a notable collector who was advised, after his inheritance in 1773, by the artist Henry Walton. Sir Thomas' most celebrated acquisition was Poussin's Adoration of the Magi, now in the National Gallery, London. The collection of Langley had been started by his great-great-uncle George Proctor who had acquired a notable group of Canalettos in Venice and purchased the house in 1742.

Other portraits of the Beauchamp-Proctor family by Bardwell were also recorded at Langley (see Kirby Talley, op.cit., no.14-16