 Ambassador to Serbia, Romania, Greece, and Spain.His uncle, the artist Carroll Livingston Wainwright, was married to Edith Gould, the daughter of George Jay Gould, and was the father of U.S. Representative Stuyvesant Wainwright II, Loudon's first cousin.He graduated from St. Andrew's School in Middletown, Delaware in 1942, and attended and graduated from the University of North Carolina at Chapel Hill, where he was elected to Phi Beta Kappa and joined St. Anthony Hall.