Lord Howard de Walden married Lady Lucy Cavendish-Scott-Bentinck (c. 1813 – 29 July 1899), daughter of William Cavendish-Scott-Bentinck, 4th Duke of Portland, at All Souls' Church in Marylebone on 8 November 1828.
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Thirty years later, on August 20, 1916, the United States played its first official international match under the auspices of U.S. Soccer against Sweden in Stockholm, which the U.S. won 3–2, with goals from Dick Spalding, Charles Ellis and Harry Cooper.
In January 1826 he was appointed Joint Under-Secretary of State for Foreign Affairs (alongside Lord Howard de Walden) by the Earl of Liverpool, a post he held until August of the same year.