Stacy Keach, Sr. was the stage name of Walter Stacy Keach (May 29, 1914 – February 13, 2003), an American actor whose screen career spanned six decades. He and his wife, Mary Cain (née Peckham), were members of the Peninsula Players summer theater program during the 1930s. He may be best known for his role as Carlson in the television show Get Smart. He was born in Chicago, Illinois. He was of English descent. His career ranged from 1942 to 1997, with more than seventy movie and television appearances.
Keach's lookalike son, Stacy Keach, Jr., enjoys an acting career with far greater name recognition than his father's. The younger Keach is perhaps best known for starring in the title role of the Mike Hammertelevision series in the 1980s and 1990s. Another son, James Keach, is also an actor as well as director and producer; he is married to actress Jane Seymour.