John Nash (architect) have great pleasure in visiting this part of my dominions". Whether this was based on just a rumour put about by people who resented Nash's success or if there is substance behind is not known. Further London commissions for Nash followed, including the remodelling of Buckingham House to create Buckingham Palace (1825–1830), and for the Royal Mews (1822–24) and Marble Arch (1828) The arch was originally designed as a triumphal arch to stand at the entrance to Buckingham Palace. It was moved when the east wing of the palace designed by Edward Blore was built, at the request of Queen
John Rolls of The Hendre further increased the size of the south wing for John E W Rolls. In 1872, Wyatt took down the old stables for John A Rolls, building larger stables. He not only added a coach house, but also rooms for billiards, smoking, and dining. A fourth enlargement of the mansion was performed in 1896, again for John A Rolls, then Lord Llangattock, with the addition of the library wing. The architect was Aston Webb (1849 – 1930), renowned for his work on Buckingham Palace, including its east facade. The Hendre at Llangattock-Vibon-Avel was grade II* listed on 4 November 1985. The