Marquess of Londonderry
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Marquess of Londonderry, of the County of Londonderry, is a title in the Peerage of Ireland.
Robert Stewart, Viscount Castlereagh, British Foreign Secretary, who became the second Marquess of Londonderry in 1821
Alexander Stewart was an Irish landowner who grew rich by inheriting a fortune from Robert Cowan, an East India Company official who served as the governor of Bombay. His son Robert became the 1st Mar
c. 1720–1725 portrait
The Temple of the Winds at Mount Stewart, commissioned by Alexander Stewart