William Martin Gulager, better known as Clu Gulager, was an American television and film actor and director born in Holdenville, Oklahoma. He first became known for his work in television, appearing in the co-starring role of William H. Bonney in the 1960–1962 NBC television series The Tall Man and as Emmett Ryker in another NBC Western series, The Virginian. He later had a second career as a horror film actor, including a lead part in Dan O'Bannon's The Return of the Living Dead (1985). He also was in A Nightmare on Elm Street 2: Freddy's Revenge (1985). In 2005 he started acting in his son's horror films — the Feasts films and Piranha 3DD — in his 80s.

Holdenville is a city in and county seat of Hughes County, Oklahoma, United States. The population was 5,934 at the time of the 2020 United States census.