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| | Wikipedia: Marquess of Londonderry |
 | | The title of Marquess of Londonderry is a title in the Peerage of Ireland created in 1816 for Robert Stewart, 1st Earl of Londonderry, father of Lord Castlereagh, the Foreign Secretary at the time. |
 | | The Marquess holds the subsidiary titles of Earl of Londonderry (Irish, 1796), Earl Vane (Peerage of the United Kingdom, 1823), Viscount Castlereagh (Irish, 1795), Viscount Seaham (U.K., 1823), Baron Londonderry (Irish, 1789), and Baron Stewart of Stewart's Court (U.K. Between 1823 and 1999, the Marquess sat in the House of Lords as Earl Vane. |
 | | Charles William Stewart, later Vane, 3rd Marquess of Londonderry (1778-1854) |
| www.factbook.org /wikipedia/en/m/ma/marquess_of_londonderry.html (186 words) |
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