the new Kedleston. So impressed was Curzon by Adam's work that by April 1760 he had put Adam in sole charge of the design of the new mansion, replacing both Brettingham and Paine. Adam completed the north facade of the mansion much as Brettingham had designed it, only altering Brettingham's intended portico. The basic layout of the house remained loyal to Brettingham's original plan, although only two of the proposed four secondary wings were executed. Brettingham moved on to other projects. In the 1760s, he was approached by his most illustrious patron, the Duke of York (brother of King George III), to design one of the greatest mansions in Pall Mall, namely York House. The rectangular mansion that Brettingham designed was built in the Palladian style on two principal floors, with the state rooms as at Norfolk House, arranged in a circuit around the central staircase hall. The house was a mere pastiche of Norfolk House, but for Brettingham it had the kudos of a royal occupant. Legacy Its royal occupant may very well have made York House the pinnacle of Brettingham's career. Built during the 1760s, it was one of his last grand houses. His last country-house commission was at Packington Hall, Warwickshire. In 1761, he published his plans of Holkham Hall, calling himself the architect, which led critics, including Horace Walpole, to decry him as a purloiner of Kent's designs. Brettingham died in 1769 at his house outside St. Augustine's Gate, Norwich, and was buried in the aisle of the parish church. Throughout his long career, Brettingham did much to popularise the Palladian movement. His clients included a Royal Duke and at least twenty-one assorted peers and peeresses. He is not a household name today largely because his provincial work was heavily influenced by Kent and Burlington, and unlike his contemporary Giacomo Leoni he did not develop, or was not given the opportunity to develop, a strong personal stamp to his work on country houses. Ultimately, he and many of his contemporary architects were eclipsed by the designs of Robert Adam. Adam remodelled Brettingham's York House in 1780 and, in addition to Kedleston Hall, went on to replace James Paine as architect at Nostell Priory, Alnwick Castle, and Syon House. In spite of this, Adam and Paine remained great friends; Brettingham's relationships with his fellow architects are unrecorded. Brettingham's principal contribution to architecture is perhaps the design of