An Original Third Person Hand Written and Signed Letter by Former Prime Minister Henry Addington, 1st Viscount Sidmouth to Dowager Countess Poulett. Dated 1823. The letter around her visit to Richmond Park and her difficyulties of her carriage getting through the gates. Henry Addington, 1st Viscount Sidmouth, 1757-1844 was an English Tory statesman who served as Prime Minister of the United Kingdom from 1801 to 1804. Addington is best known for obtaining the Treaty of Amiens in 1802, an unfavourable peace with Napoleonic France which marked the end of the Second Coalition during the French Revolutionary Wars. When that treaty broke down he resumed the war, but he was without allies and conducted relatively weak defensive hostilities, ahead of what would become the War of the Third Coalition. He was forced from office in favour of William Pitt the Younger, who had preceded Addington as Prime Minister. Addington is also known for his reactionary crackdown on advocates of democratic reforms during a ten-year spell as Home Secretary from 1812 to 1822. He is the longest continuously serving holder of that office since it was created in 1782. Size is 182mm x 120mm. Condition is good. Mounted on thin paper.