Bonanza
Bonanza is an NBC television western series that ran from 1959 to 1973. Lasting 14 seasons and 431 episodes, "Bonanza" is NBC's longest-running western, and ranks overall as the second-longest-running western series on U.S. network television (behind CBS's "Gunsmoke"), and within the top 10 longest-running, live-action American series. The show continues to air in syndication. The show is set in the 1860s and it centers on the wealthy Cartwright family that live in the vicinity of Virginia City, Nevada, bordering Lake Tahoe. The series initially starred Lorne Greene, Pernell Roberts, Dan Blocker, and Michael Landon and later featured (at various times) Guy Williams, David Canary, Mitch Vogel, and Tim Matheson. The show is known for presenting pressing moral dilemmas.
Bonanza
Attempts to replace Adam with Little Joe's maternal half-brother Clay (Barry Coe) and Cartwright cousin Will (Guy "Zorro" Williams), were unsuccessful. Creator David Dortort introduced a storyline that would keep the character of Adam in the mix, but with a lighter schedule. During season five Adam falls for a widow with a young daughter, while making Will Cartwright a central figure. Roberts decided to stay an additional season, so the scripts were quickly revised by having Adam's fiancée and her daughter depart the series prematurely with Guy Williams' Will, with whom she'd fallen in love. It was Landon, not Roberts, who objected to the infusion of any new Cartwrights. After Roberts did leave the following year, it was eventually mentioned that Adam had gone "to sea", and in the later movies he had emigrated to Australia and had a son Adam 'A.C.' Cartwright, Jr. In mid 1972, the series producers considered inviting Roberts back in the wake of Dan Blocker's death: "One suggestion was to return Pernell Roberts, who had played another Cartwright son when "Bonanza" first premiered on NBC fourteen years ago. We only considered that briefly, [producer Richard Collins says] Some people felt it was a logical step—the oldest son returning at a time of family need—but most of us didn't think it would work.'