Waldegrave was offered a baronetcy – which he declined – after serving as third in command at the Battle of Cape St Vincent in 1797. That same year, Waldegrave was appointed Governor of Newfoundland. After completing his term in 1800, he was granted an Irish peerage as Baron Radstock of Castletown and promoted to admiral when he retired in 1802. Waldegrave was awarded the “Most Honourable Order of the Bath” and appointed a Knight Grand Cross of the same order in 1815.

Waldegrave’s art collection was valued at 51,000 guineas and included a Van Dyke portrait of King Charles I; Waldegrave also served as patron to young artists.

Baron Radstock is mentioned in the provenance for Aert van der Neer’s _Paysage et effet du soir _(Evening Landscape). The painting was sold through Christie’s in London on 12 May 1826 (lot no. 32). It later was acquired by Adolphe Schloss (Schloss German no. 158/ French no. 184).

Sources:

https://morethannelson.com/officer/hon-william-waldegrave-1st-baron-radstock/. Accessed 18 June 2021.

Phillips Son & Neale. _Pictures, of the Dutch, Flemish, and Italian Schools. _London, 19 April 1823.

Christie, Manson & Woods. Catalogue of the very noble collection of Italian, French, Flemish, and Dutch pictures of the Right honorouable Admiral Lord Radstock. London, 1826. https://archive.org/details/frick-31072002729467/page/n17/mode/2up?q=Neer. Accessed 18 June 2021.