- Né le 18 mai 1778
- Décédé le 6 mars 1854, à l'âge de 75 ans
Parents
- Robert Stewart (1739 - 1821), Marquess of Londonderry, Member of Parliament for County Down, privy counsellor for Ireland
- Frances Pratt (1751 - 1833)
Famille
Occupations
- Member of Parliament for Thomastown (1800)
- Member of Parliament for County Londonderry (1800 - 1801)
- Member of Parliament for Londonderry (1801 - 1814)
- lieutenant-general
- colonel of the 25th Light Dragoons (1813 - 1818)
- colonel of the 10th Royal Regiment of (Light) Dragoons (Hussars) (1820 - 1843)
- colonel of the 2nd Regiment of Life Guards (1843 - 1854)
- under-secretary of State for War and the Colonies (1807 - 1809)
- minister to Prussia (1813 - 1814)
- ambassador to Austria (1814 - 1823)
- lord-lieutenant of Durham (1842 - 1854)
- privy counsellor
Distinctions
- most noble order of the Garter
- order of the Bath