Khire and 50 Cent/Facebook 50 Cent has filed a lawsuit against Tia Kemp, an Internet personality and the mother of Rick Ross’ son, William Roberts III. 50 Cent, who is notorious for his online trolling of other celebrities, recently got involved in an incident where Ross and Kemp’s 21-year-old son was allegedly pistol-whipped outside his school, Bethune-Cookman University, in Florida on Oct. 11. Shortly following the incident, 50 Cent allegedly bailed out the alleged attacker