 On 2 January 1815 he was promoted to the grand cross of the Bath, and on 25 November was created Baron Adbaston, in the County of Stafford, and Earl Whitworth.After the restoration of the Bourbons in France, which as a political expedient he highly approved, he visited Paris in April 1819 with the Duchess of Dorset and a numerous train.His official capacity was denied, but he was generally deemed to have been charged with a mission of observation.