The Godmother of rock guitar,
Sister Rosetta Tharpe. Her history is too broad to cover in one post. I think she was one of the first musicians out there to have a tour bus with her face and name plastered on the side of it. Started on guitar at age 6, playing at her mother's church. Married her first husband, and played at his church. Set out on her own. Signed a "secular" contract, which disappointed her religious fans. Filled a stadium by selling 25,000 tickets to her third marriage. Had an affair with her female backup singer. Had an all-white backup band at one point.
I've been doing lots of reading, study, and watching old videos and listening to old recordings of Blues players. Her personality is probably the most interesting of those from the past, and probably one of the lesser known stories.