In 1770 he succeeded his grandfather as fourth Earl of Cholmondeley and entered the
House of Lords. In April 1783, Cholmondeley was admitted to the
Privy Council and appointed
Captain of the Yeomen of the Guard in the government of the
Duke of Portland, a post he held until December the same year. He remained out of office for the next 29 years, but in 1812 he was made
Lord Steward of the Household in
Spencer Perceval's
Tory administration. He continued in the post after
Lord Liverpool became Prime Minister after Perceval's assassination in May 1812, holding it until 1821. In 1815, Cholmondeley was created
Earl of Rocksavage, in the County of Chester, and
Marquess of Cholmondeley. He was further honoured when he was made a Knight Grand Cross of the
Royal Guelphic Order (Hanoverian Order) in 1819 Apart from his political career, he was also
Lord-Lieutenant of Cheshire from 1770 to 1783 and
Vice-Admiral of Cheshire from 1770 to 1827.
Cholmondeley Sound, in
southeast Alaska, was named for him in 1793 by
George Vancouver. ==Personal life==