Thin Lizzy
My first thought was Thin Lizzy, too. Lead vocalist Phil Lynott was a black Irishman, and nobody cared back then:
https://www.youtube.com/watch?v=At_rPiCCnpY
He had trouble at a school in England, so his mother sent him to live with his grandparents in Dublin where he had a happy childhood and was popular at school:
https://en.wikipedia.org/wiki/Phil_Lynott