A black and white photo of Lorne Greene, Pernell Roberts, Dan Blocker, and Michael Landon riding horses in

NBC’s hit Western series, Bonanza, ran from 1959 to 1973 — but not everyone from the main cast stayed with the show the entire time. Pernell Roberts played Adam Cartwright, and he infamously didn’t get along with the writers, thus exiting the series. Later, Michael Landon made fun of Roberts for leaving the show.

Why did Pernell Roberts leave ‘Bonanza’?

A black and white photo of Lorne Greene, Pernell Roberts, Dan Blocker, and Michael Landon riding horses in 'Bonanza'
Lorne Greene as Ben Cartwright, Pernell Roberts as Adam Cartwright, Dan Blocker as Eric ‘Hoss’ Cartwright, and Michael Landon as Joseph ‘Little Joe’ Cartwright | Silver Screen Collection/Getty Images

Pernell Roberts played Adam Cartwright on Bonanza from 1959 to 1965. Adam was more serious than some of the other Cartwrights, including Little Joe Cartwright played by the young Michael Landon. And when Roberts left the role, he didn’t have much good to say.

You May Also Like

Gwen Stefani Admitted It Blows Her Mind That She’s Still ‘Relevant’

Gwen Stefani burst into the public consciousness in 1995 with the release…

Pete Davidson and new girlfriend Elsie Hewitt have date night courtside at Knicks game

Game on. Pete Davidson and his new girlfriend, Elsie Hewitt, had a…

King Charles Won’t Strip Harry and Meghan of Their Sussex Titles, but It’s Almost Guaranteed William Will

Prince Harry and Meghan Markle’s Sussex titles are safe. At least for…

Michelle Williams calls out flight passenger for ‘nasty’ behavior in first class: ‘A lot of audacity’

Michelle Williams called out a flight passenger for putting their “nasty” bare…