I know quite a few africans in fraternities...mostly in the NPHC frats...
I know it's quite a challenge for some frat chapters to break the cultural barrier and accept someone in...but hey, if u are a good guy, u bound to find a fraternity of good guys like u and have a ball in your college career, but let me give you a few words of advice.
-Dont jump into it real quick kid. Get a feel of the school, get a balance of the social life, academics and everything before you make that decision to join a frat.
-U play rugby? awesome I play rugby too...used to, I'm too fat and too lazy and too busy for it.
-Since u have a famous family in Uganda, u might want to be at ur best behavior at UT talk less of when u get into the frat life. UT is a really big school and word spreads quickly within the intl crowd at any school for that matter..u don't want to hurt ur family's reputation (if it is a good one)...you know?