William Devane net worth. Much of the William Devane wealth has come from his salary as an actor. As of April 2020, William Devane has an estimated net worth of $6 million, which he received from acting in many movies such as ‘McCabe,’ ‘Mrs. William Devane Salary: In the year 1980, he charged $1,00,000 per episode of “From Here to Eternity” William Devane House. As of now, William Devane Net Worth is $5 Million. The actor has been in the acting business since 1967 and has featured in numerous movies and TV series. William Devane Wiki: Salary, Married, Wedding, Spouse, Family William Joseph Devane (born September 5, 1937) is an American film, television and theater actor, perhaps best known for his role as Greg Sumner on the primetime soap opera Knots Landing (1983–1993). William Devane Net Worth. William Joseph Devane (born September 5, 1939) is an American film, television and theatre actor, known for his role as Greg Sumner on the primetime soap opera Knots Landing (1983–1993) and as James Heller on the Fox serial drama 24 (2005–2007), the role he reprised in Live Another Day (2014). William Devane owned a house in New York and a ranch in California. As of 2019, the American born actor’s net worth is estimated at 5 million dollars. William Devane is an American actor of stage, screen and television with a net worth of $5 million.