The youngest was the hotheaded Joseph, aka “Little Joe,” played by Michael Landon years before his star turn in Little House on the Prairie. The main ‘Bonanza’ cast members are no longer aliveFifty years after the final episode aired, nearly all of the Bonanza cast has died. 2 ‘Bonanza’ cast members remain close even in deathCostars Michael Landon, left, and Lorne Greene on the Bonanza set following the show's 1972 cancellation.https://t.co/fpByHVr33h pic.twitter.com/a0vughLd4U — Scott Harrison (@harrysonpics) April 6, 2018Dan Blocker died tragically young, at 43, after suffering a pulmonary embolism following gallbladder surgery in 1972. His death took such a toll on the Bonanza cast that the show became one of the first to reference a character’s demise in its story. Lorne Greene died in 1987 at 72 after complications from pneumonia following ulcer surgery.

Source: Los Angeles Times November 26, 2022 10:26 UTC