Wikipedia : This day (May 25, 1965), in Helena, Arkansas, died Sonny Boy Williamson, an American blues harmonica player, singer and songwriter, from Mississippi.,
@Bluesworld : He claimed to fans and blues researchers that he was the original Sonny Boy (John Lee Williamson) who came from Jackson, Tennessee and recorded for Bluebird and later RCA Victor until his untimely death at the hands of an assailant on a Chicago street in the late 1940’s. But according to his sister, Mary Ashford of Tutwiler, his real name was Alex Rice Miller.
@allmusic : Sonny Boy Williamson was, in many ways, the ultimate blues legend. By the time of his death in 1965, he had been around long enough to have played with Robert Johnson at the start of his career and Eric Clapton, Jimmy Page and Robbie Robertson at the end of it.
@last.fm : Williamson had begun developing a following in Chicago beginning in 1953, when he appeared there as a member of Elmore James’s band. In the 1960’s he toured Europe during the height of the British blues craze, recording with The Yardbirds and The Animals.