[4] His paternal grandfather, Wyoming cattle rancher Oliver Henry Wallop, immigrated to the United States from England in the late 19th century and inherited the Earldom of Portsmouth.

[5] In his first term, Wallop authored the legislation that established the Congressional Award program to recognize outstanding volunteerism among America's youth.

[9] In 1988, Wallop won his final term by just 1,322 votes over his opponent, Democratic state senator John Vinich.

[citation needed] Wallop's last term was characterized largely by his participation in the foreign policy and trade debates of the late 1980s and early 1990s.

He was a member of the Helsinki Commission and traveled extensively in Eastern Europe and the former Soviet Union as an arms control negotiator.

Upon his retirement from the Senate, The Economist wrote of Wallop: "Although his detractors have steadily grown in number, even Democrats grudgingly admitted to liking his candor and his willingness to be stupendously politically incorrect.

"[5] After his retirement from the Senate in January 1995, Wallop founded the Frontiers of Freedom Institute, a Virginia-based non-profit group that lobbies for constitutionally limited government and a strong national defense.

[6][10] In 1996, Wallop served as General Chairman and Executive Director of the Steve Forbes presidential campaign, which succeeded in winning primary victories in Delaware and Arizona.

Lord Carnarvon was a childhood friend of Queen Elizabeth II and was in 1969 appointed her horse racing manager.

[14] Wallop's nephew is George Herbert, 8th Earl of Carnarvon, whose family seat in England, Highclere Castle, has achieved prominence as a filming location for the ITV television series Downton Abbey.