John Nash (18 January 1752 – 13 May 1835) was an English architect responsible for much of the layout of Regency London under the patronage of the Prince Regent, and during his reign as George IV. Nash was also a pioneer in the use of the Picturesque in architecture. His best-known buildings are the Royal Pavilion, Brighton, and Buckingham Palace (though the facade facing The Mall is an early 20th-century remodelling by Aston Webb of an 1850s wing by Edward Blore, and thus is not Nash's work). Many of his buildings were built by the property developer James Burton, who also lent him financial assistance when he encountered financial problems during his projects on Regent Street. In return, Nash promoted the career of Burton's son, Decimus Burton, who assisted him with several of his designs and later became a famous architect in his own right.