In 1819, Londonderry House was bought by The Rt. Hon. The 1st Baron Stewart, a British aristocrat, and later, during World War I, the house was used as a military hospital.
In 1819, Londonderry House was bought by The Rt. Hon. The 1st Baron Stewart, a British aristocrat, to serve as a home whilst the family stayed in London during the season. During World War I the house was used as a military hospital.