[4] William Weddell (1736–1792), an MP for the constituency of Malton, benefited from his great-uncle's South Sea Company fortune and improved and enlarged the house during the 1760s.

Lady Mary commissioned William Burges to build the Church of Christ the Consoler in the grounds in 1871–76 as a memorial to her son, who was killed by bandits in Greece in 1870.

[7] An equestrian statue brought to England by the Vyners and erected in London after the 1660 Restoration of the Monarchy, modified to depict Charles II trampling Cromwell, was re-erected at Newby in 1883.

The gardens, which have extensive herbaceous borders and woodland walks, were developed in their present form by Major Edward Compton, who took over Newby in 1921.

[a] At other times the train is pulled by the Countess De Grey or Lady Mary Vyner, LPG-powered diesel-hydraulic locomotives designed by David Curwen and built by Severn Lamb.

[13] It was featured on an episode of An American Aristocrat's Guide to Great Estates on the Smithsonian Channel and Amazon Prime Video which first aired in 2020.

[14] Newby Hall was the venue for two episodes of BBC One’s Antiques Roadshow filmed in 2020 and transmitted in January and April 2021.