When was the brother of Alfrederick born who was also  three-time Olympic gold medalist ?
Al Joyner:  He was also the husband of three-time Olympic gold medalist and world 100 m and 200 m record holder Florence Griffith Joyner and is the brother of three-time Olympic gold medalist and world heptathlon record holder Jackie Joyner-Kersee. Jackie Joyner-Kersee: Jacqueline "Jackie" Joyner-Kersee (born March 3, 1962) is an American retired track and field athlete, ranked among the all-time greatest athletes in the heptathlon as well as long jump.
i don't know