[7] Promoted major, he was appointed Deputy Adjutant-General in the East Indies on 29 June 1815, as a brevet lieutenant-colonel.
They had four children: In 1851, he inherited the earldom from his brother, Charles Stanhope, 4th Earl of Harrington.
In 1852 Stanhope acquired a plot of land formerly belonging to the kitchen garden of Kensington Palace: he constructed Harrington House (or No.
[16] Works were carried under the supervision of Charles James Richardson, who was the surveyor to the Earl's extensive South Kensington estate.
[16] Details and the final plans are thought to have been left to Richardson; he did, however, acknowledge the "great measure" the Earl was involved in the design.