Question: One of five brothers, what nephew of BJJ co-founder became one of the first twelve foreign nationals to have earned a black belt in Brazilian Jiu Jitsu?
Context: Luanna Alzuguir is a female Black Belt Brazilian Jiu Jitsu practitioner.  She won the World Championships in 2009, and in 2010, she won the open class.  In these two years, she won all major championships in Brazilian Jiu Jitsu, including the national championships, the Pan American championships, and the 2009 world championship.  She is an ADCC champion and holds a win over Kyra Gracie. Rômulo Barral (born May 3, 1983) is a Brazilian Jiu Jitsu competitor.  He is a black belt under Vinicius Magalhaes and competes for Gracie Barra, where he has won numerous championships.  Rômulo Barral is one of the top Brazilian Jiu Jitsu fighters in the “Meio Pesado” weight division.  Rômulo Barral maintained this black belt status in the years that followed with consistent medals at the top BJJ tournaments in the world.  In August, 2011, Rômulo established his own Gracie Barra academy in Northridge, California, proving that he is also a coach.  Rômulo is a 5-time black belt world champion, 3-time silver medalist in the open weight division, and a NO GI world champion, and the 2013 ADCC champion. Robson Moura Fonseca is a Brazilian Jiu Jitsu competitor, instructor and a mixed martial artist.  He started training in Brazilian Jiu Jitsu at the age of 10 in Teresópolis, Brazil.  His first Brazilian Jiu-Jitsu teacher was Ailson "Jucão" Brites, though Moura attained the rank of black belt at the age of 18 from Nova União co-founder Andre Pederneiras.  Today Moura holds a 5th degree black belt in Brazilian Jiu-Jitsu under Professor Brites.  He has a mixed martial arts record of 2-1-1. John Will (born (1957--)16 1957 ) is a notable martial artist from Australia.  Will won the "Best Exponent Award" in the first World Silat Championships held in Jakarta in 1981.  Will also completed his black belt in Brazilian Jiu Jitsu under Rigan Machado and his brothers, John, Roger and Jean Jacques Machado in 1997; making him one of the first twelve foreign nationals to have earned a black belt in Brazilian Jiu Jitsu. Fredson Paixão Melo (] ; born May 13, 1979) is a Brazilian mixed martial artist and Brazilian Jiu Jitsu instructor.  He has competed as a featherweight in the United States at the UFC and WEC, DEEP in Japan, and Jungle Fight in Brazil.  He is a four-time Brazilian Jiu Jitsu World Champion and a Brazilian Jiu Jitsu professor who teaches in Las Vegas, Nevada, and has affiliate schools in California, United States, and Okinawa, Japan under the "Fredson Paixao Brazilian Jiu Jitsu Association" banner.  He is a former member of the Gracie Barra Combat Team. Ricardo “Animal” Migliarese (aka Rick Migliarese, born December 17, 1978) is an American born professional Brazilian Jiu Jitsu grappler and a 4th degree Relson Gracie Brazilian Jiu Jitsu Black Belt with approximately 20 years of experience in BJJ and Mixed Martial Arts.  A World and Pan-Am Champion, Rick is a trainer, training partner and coach to UFC and MMA fighters as well as other World and Pan-Am Champions.  He currently lives in Philadelphia, PA where he teaches at Balance Studios which he co-owns with his brother, Phil Migliarese.  Rick is also one of the co-founders/co-owners of Matrix Fights Promotion Company. Rubens Charles Maciel (born December 24, 1979), aka "Cobrinha" and sometimes referred to as Rubens "Cobrinha" Charles, is a Brazilian Jiu Jitsu (BJJ) competitor.  He is considered the best featherweight in the decade and to be among the best pound for pound jiu jitsu competitors in the world .  Cobrinha is a black belt in Brazilian jiu-jitsu under Fernando "Terere" Augusto and a member of Alliance Jiu Jitsu.  Cobrinha has won a total of six world championship titles in Brazilian jiu-jitsu as a black belt in the featherweight (or lightweight) category.  He started training BJJ in 2000, received his black belt in 2005, and has since medaled in every World Jiu-Jitsu Championship in which he has competed - a total of ten.  He is known for his attacking style of jiu jitsu and, in particular, for his guard.  His guard was voted the best Guard of the Decade by fellow World Champions. Roberto "Spider" Traven (born September 16, 1968) is a retired Brazilian mixed martial artist whose fighting style is based in Brazilian Jiu-Jitsu and submission wrestling.  He was a sporty person growing up, it took him 16 years to find Brazilian Jiu Jitsu, but straight away he picked up tuition with one of the most highly decorated coaches of all time, Romero Cavalcanti AKA “Jacaré”.  His natural ability for BJJ was clear from the get-go and the fact that he was obstinate made a recipe for a good fighter.  Training 3 times per day alongside other historical figures such as Fabio Gurgel, Leo Vieira, Jamelão and many others, Traven managed to reach the grade of black belt within 4 years, an almost record breaking time frame in BJJ. Fabrício dos Santos Camões (] ; born December 23, 1978) is a Brazilian mixed martial artist, who formerly competed in the Lightweight division of the Ultimate Fighting Championship.  Camões's primary style in the cage is Brazilian Jiu Jitsu, Camões is a 3rd degree black belt in Brazilian Jiu Jitsu under Royler Gracie. Jean Jacques Machado is one of the five Machado brothers, including Carlos, Roger, Rigan and John, renowned for their Brazilian Jiu-Jitsu (BJJ) skills.  Nephews of BJJ co-founder and Master Carlos Gracie, the brothers learned the martial art from an early age.
Answer: John Will