David Honeyboy Edwards - Delta Blues

Edwards earned his nickname "Honey-Boy" from his sister, who told his mother to "look at honey boy" when he stumbled as he learned to walk as a toddler.

A real good entry in Wikipedia including

.... He performed with famed blues musician Robert Johnson with whom he developed a close friendship. Honeyboy was present on the night Johnson drank poisoned whiskey which killed him, and his story has become the definitive version of Johnson's demise....