Jackie Brown.

About Jackie Brown

John Brown, better known as Jackie Brown, was a flyweight boxing world champion. He held the NBA, IBU and British flyweight titles. He would be stripped of both his NBA and IBU titles while still having not been beaten at flyweight since the beginning of his reigns. The NBA stripped him on July 6, 1934 when he was arrested and sentenced to four months in prison for assault. while he was stripped of his IBU title for not giving Valentin Angelmann another chance after a draw in a title bout against him. His British flyweight title would be the only title he lost in the ring when he was defeated on September 9, 1935 to Benny Lynch thus taking all claims he laid to being a flyweight champion.