Stuart Marks (Gracie Oceania) Stuart Marks (Gracie Oceania) BJJ Fighter Database SHARE BJJ Heroes , / 5763 6 Stuart Marks on the left receiving his black belt Stuart Marks is a Brazilian Jiu Jitsu black belt from New Zealand under Mario Yokoyama who is a coach of Gracie Oceania also affiliated with Ryan Gracie Academy. . . Stuart Marks in Detail Full Name: Stuart Andrew Marks Lineage: Mitsuyo Maeda > Carlos Gracie Sr. > Carlos Gracie Junior > Ryan Gracie > Mario Sergio Yokoyama > Stuart Marks Main Achievements: Pan Pacs Silver Medallist (2007) Team/Association: Gracie Oceania Stuart Marks Biography Stuart Andrew Marks was born on the 15th of April, 1974 in Christchurch, New Zealand. His love for Jiu Jitsu led him to train BJJ by himself in 2000. He then found a BJJ trainer on Cristiano Felipe Alves, though he soon changed coach and started his tuition under Mario Yokoyama. He received all his belts, from blue all the way to black from Yokoyama, his black belt was awarded on April 30, 2011.