Pernell Roberts, the ruggedly handsome actor who shocked Hollywood by leaving TV’s “Bonanza” at the height of its popularity, then found fame again years later on “Trapper John, M.D.,” has died. He was 81.

Roberts, the last surviving member of the classic Western’s cast, died of cancer Sunday at his Malibu home, his wife Eleanor Criswell told the Los Angeles Times.

Although he rocketed to fame in 1959 as Adam Cartwright, eldest son of a Nevada ranching family led by Lorne Greene’s patriarchal Ben Cartwright, Roberts chafed at the limitations he felt his “Bonanza” character was given.

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