Dack Rambo

Norman Jay "Dack" Rambo (November 13, 1941 – March 21, 1994) was an American actor, widely known for his role as Walter Brennan's grandson Jeff in the series The Guns of Will Sonnett, as Steve Jacobi in the soap opera All My Children, as cousin Jack Ewing on Dallas, and as Grant Harrison on the soap opera Another World. From Wikipedia, the free encyclopedia.