Breck died Monday in Vancouver, British Columbia, after a long illness, his wife, Diane, announced on the website The Big Valley Writing Desk.
A native of Haverhill, Mass., Breck was also a regular on the TV Westerns "Maverick" and "Black Saddle." He had guest roles on series from the 1950s through the early 2000s including "Perry Mason," ''The Virginian" and "Fantasy Island."
His film appearances include "Thunder Road," ''I Want to Live!" and "Benji."
Breck was best known for his role as hot-tempered rancher Nick Barkley on "The Big Valley," which aired from 1965 to 1969.
He and his wife were longtime Vancouver residents.
