Web Reference: William Joseph Devane (born September 5, 1939) is an American actor. He is known for his role as Greg Sumner on the primetime soap opera Knots Landing (1983–1993) [1] and as James Heller on the Fox serial dramas 24 (2001–2010) and 24: Live Another Day (2014). Actor: Knots Landing. William Devane, the movie and television actor, was born in Albany, New York, the son of Joseph Devane, who served as Franklin D. Roosevelt's chauffeur when he was Governor of New York. Jan 25, 2026 · • William Joseph ‘Bill’ Devane is an American actor born in Albany, New York State, USA. • He is possibly best known for his roles in films such as “Marathon Man” and “Space Cowboys”, and his television roles as Greg Sumner on “Knots Landing”, and James Heller on “24.”
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Knots Landing Actor William Devane - Latest Information & Updates 2026 Information & Biography
Details: $67M - $108M
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Last Updated: April 2, 2026
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