Robert Francis Vaughn was born on 22 November 1932 at Charity Hospital in New York City, the son of radio actor Gerald Walter Vaughn and stage actress Marcella Frances Gaudel. His parents divorced when he was a young child and he was raised largely by his maternal grandparents in Minneapolis, Minnesota. Genealogists researching his family have listed Welsh ancestry, alongside Irish, German and French roots, on his father's side - the Vaughn surname itself being a well-known Welsh name. Family tradition, repeated on this site for many years, has linked the Vaughn line specifically to the Bala area of Gwynedd, though that particular claim has not been independently confirmed through mainstream biographical or genealogical sources.
Vaughn trained as an actor in Los Angeles and won a 1960 Academy Award nomination for Best Supporting Actor for his role as a disabled, alcoholic war veteran in The Young Philadelphians (1959). The same year, he appeared as the gunslinger Lee in the Western classic The Magnificent Seven (1960).
He achieved his greatest fame playing the suave secret agent Napoleon Solo in the television series The Man from U.N.C.L.E. (1964-1968), one of the defining spy shows of the decade at the height of Bond-era spy mania. His film career continued alongside his television work, with roles including Walter Chalmers in Bullitt (1968), an American officer in The Bridge at Remagen (1969), and the villain Ross Webster in Superman III (1983).
In later life Vaughn became a familiar face to British television audiences as veteran con artist Albert Stroller in the BBC drama Hustle (2004-2012). He remained politically active throughout his life as an outspoken critic of the Vietnam War, and held a PhD in communications from the University of Southern California. He died in Danbury, Connecticut, on 11 November 2016, aged 83.