What Prince Regent likely stayed in Carlton House in 1811?
Carlton House: Carlton House was a mansion in London, best known as the town residence of the Prince Regent for several decades from 1783. George IV of the United Kingdom: George IV (George Augustus Frederick; 12 August 1762 – 26 June 1830) was King of the United Kingdom of Great Britain and Ireland and of Hanover following the death of his father, George III, on 29 January 1820, until his own death ten years later. George IV of the United Kingdom:  From 1811 until his accession, he served as Prince Regent during his father's final mental illness.
George IV