According to an article on TV westerns in Time Magazine (March 30, 1959), Clint stood 6' 6" tall, weighed 235 lbs, and had chest-waist-hips measurements of 48-32-36.
He was born a twin.
His twin sister's name was Lucille.
In 1971, he was involved in a freak accident at Mammoth Mountain, CA, when the tip of a ski pole pierced his heart. He made an amazing recovery and was back at work filming in Spain two months later.
Unlike many of his TV-western colleagues, Clint Walker never had to endure a whipping on "Cheyenne" (1955) (though on a 10-23-61 episode titled "The Young Fugitives," he was bound shirtless to a tree.
Walker's twin sister, Neoma L. "Lucy" Westbrook, died Nov. 11, 2000 at her residence in Hartford, Illinois, aged 73.