Frederick William Robert Stewart, 4th Marquess of Londonderry, styled Viscount Castlereagh from 1822 to 1854, was a British nobleman and Tory politician. He was briefly Vice-Chamberlain of the Household under Sir Robert Peel between December 1834 and April 1835.
- Occupation
- politician
- Position held
- Member of the Privy Council of the United Kingdom, member of the 15th Parliament of the United Kingdom, member of the 14th Parliament of the United Kingdom, member of the 13th Parliament of the United Kingdom
- Citizenship
- United Kingdom of Great Britain and Ireland
