The Sifu was Sifu Choy Fong Lum, who studied under WFH, and moved to Peru's Chinatown-according to the website.
http://www.kungfuokc.com/school_website_2_008.htm
The website doesn't offer much, and is simply written.
The person I met was not Sifu Leturia, (and prefers not to be mentioned) so there is not much to go by, unless anyone else knows students of Choy.
BTW-he called the set Sup Ji Kuen, and not Mui Fa Kuen, but Mui Fa does follow a sup ji pattern.
'My Gung-Fu is MY Gung-Fu. It may not be YOUR Gung-Fu"
Gwok Si, Gwok Faht