"William Henry Nassau de Zuylestein, 4th Earl of Rochford, KG, PC (17 September 1717 O.S. – 29 September 1781) was a British courtier, diplomat and statesman ...
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of Anglo-Dutch descent. He occupied senior ambassadorial posts at Madrid and Paris, and served as Secretary of State in both the Northern and Southern Departments. He is credited with the earliest-known introduction of the Lombardy poplar to England in 1754.
He was a personal friend of such major cultural figures as the actor David Garrick, the novelist Laurence Sterne, and the French playwright Beaumarchais. George III valued Rochford as his expert advisor on foreign affairs in the early 1770s, and as a loyal and hard-working cabinet minister. Rochford was the only British secretary of state between 1760 and 1778 who had been a career diplomat." - (en.wikipedia.org 28.12.2020)
