Roberto trained in Brazil under his cousin Carlos Gracie , Jr. and officially received his black belt from Renzo Gracie in 1994 .
Boston Brazilian Jiu - Jitsu Academy was founded in 1995 by Professor Roberto Maia .
Roberto trained in Brazil under Roberto Maia 's cousin Carlos Gracie , Jr. and officially received his black belt from Renzo Gracie in 1994 .
Boston Brazilian Jiu - Jitsu Academy was founded in 1995 by Professor Roberto Maia .