The Billington family is a British family of English nationality which has had a long history in England as state employed executioners as well as several members who ventured into the world of combat sports and professional wrestling.
 Two of the family's sports oriented members would go on to marry into the Canadian Hart wrestling family.
The Hawaii Sports Hall of Fame is a sports hall of fame and museum in the U.S. state of Hawaii.
 According to the hall's official website, it serves as the "state museum for sports history in the islands," and "is best described as an educational repository created to enshrine athletes, pioneers and contributors of Hawai'i's rich sports history."
 The organization was founded in 1997 and a selection committee meets once a year in December.
 The flagship exhibition for the hall is located in the Bishop Museum in Honolulu.
Roderick "Rod" Smith is a Canadian sports commentator.
 He has been with TSN since 1987, joining as an editorial assistant for "SportsCentre" (then "SportsDesk").
 He became a reporter in 1992 and has presented "SportsCentre" since 1995.
 He was also a play-by-play announcer for CFL on TSN and CIS University Football.
 At the Vancouver 2010 Olympic Winter Games, Smith provided the play-by-play commentary for Long Track Speed Skating.
 He earned his first Gemini Award nomination in the category of Best Sports Play-by-Play Announcer later that year.
 During the London 2012 Olympic Summer Games, Smith delivered play-by-play commentary from the Aquatic Centre and was honoured with the first-ever Canadian Screen Award for Best Sports Play-by-Play Announcer in 2013.
 After Dave Randorf left as host of the "CFL on TSN" panel to join Rogers Media, Smith took over as host.
Mauro Domenico Ranallo (born December 21, 1969) is a Canadian sports announcer and commentator.
 He is currently signed as a play-by-play announcer with MMA organization Bellator, professional wrestling promotion WWE (on their NXT brand) and also performs play-by-play duties for boxing broadcaster Showtime, most notably, the Floyd Mayweather Jr. vs. Conor McGregor bout.
 He began announcing when he was 16 years old and is notable for his dramatic style, which involves heavy use of metaphor, puns, and an advanced vocabulary.
 He has experience in Canadian football, ice hockey, professional wrestling, boxing, kickboxing, and mixed martial arts events.
Alexander Pavlovich Shlemenko (Russian: Александр Павлович Шлеменко , born 20 May 1984) is a Russian mixed martial artist currently fighting in the Middleweight division for Bellator Fighting Championships.
 Alexander is an expert in hand-to-hand combat and traditional Kickboxing.
 He trains at the "Saturn Profi" sports club in Omsk, Russia, and holds a degree in Physical Culture (specialization - Combat Sports Trainer) at the Omsk State University.
 Shlemenko is ranked as the #8 Middleweight in the world by Fight!Magazine.
 According to the global-mma.
com rankings, he is the number 6 ranked middleweight fighter in the world (outside of the UFC)
Multiple citizenship, also called dual citizenship or multiple nationality or dual nationality, is a person's citizenship status, in which a person is concurrently regarded as a citizen of more than one state under the laws of those states.
 There is no international convention which determines the nationality or citizen status of a person, which is defined exclusively by national laws, which vary and can be inconsistent with each other.
 Multiple citizenship arises because different countries use different, and not necessarily mutually exclusive, criteria for citizenship.
 Colloquial speech refers to people "holding" multiple citizenship but technically each nation makes a claim that this person be considered its national.
Welterweight is a weight class in combat sports. Originally the term "welterweight" was used only in boxing, but other combat sports like Muay Thai, taekwondo, and mixed martial arts also use it for their own weight division system to classify the opponents.
 In most sports that use it, welterweight is heavier than lightweight but lighter than middleweight.
Stephen “The Fight Professor” Quadros (born in Santa Cruz, California, United States) is an American broadcaster, specializing in play-by-play and color commentary, as well as interviews for the combat sports genre on cable, pay-per-view and DVD.
 His resume encompasses over 100 international mixed martial arts events since 1997.
Arizona Combat Sports is a mixed martial arts training organization, founded by Todd Lally and Trevor Lally, based in Tempe, Arizona.
 Its training facility features a boxing ring, an MMA octagon, a grappling room and a pro shop.
 Instructors at Arizona Combat Sports include Trevor Lally for Muay Thai , Jameson White, and BJJ Black Belt Steve Rosenberg.
Floyd Mayweather Jr. vs. Conor McGregor, also known as "The Money Fight" and "The Biggest Fight in Combat Sports History", was a professional boxing match between undefeated eleven-time five-division boxing world champion Floyd Mayweather Jr. and two-division mixed martial arts (MMA) world champion and at-the-time current UFC Lightweight Champion Conor McGregor.
 The match took place at the T-Mobile Arena in Paradise, Nevada, on August 26, 2017 at the light-middleweight weight class (154 lbs; 69.9 kgs).
 It was scheduled for twelve rounds.

Question: What nationality is the person who did the play-by-play for the "The Biggest Fight in Combat Sports History"?
Answer: Canadian