Yes, the acclaimed saxophonist King Curtis did have at least one child.
His Son, Curtis Jr.
King Curtis was a father to a son named Curtis Jr. At the time of his passing in 1971, his son was 11 years old. This confirms he had a direct descendant, a young son who survived him.
About King Curtis
Born Curtis Ousley, King Curtis was a highly influential figure in the world of music. His career as a professional musician began shortly after his high school graduation, quickly leading him to play with established bands. He notably became a member of Lionel Hampton's band, which prompted his move to New York, where his career continued to flourish. He was renowned for his distinctive saxophone work across a wide array of genres, including rhythm and blues, rock and roll, soul, and funk, leaving a significant legacy in American music.