Question: The WWN Championship had an inaugural champion of which former mixed martial artist?

 The inaugural champion was crowned on April 1, 2017, when Matt Riddle defeated five other men for the title. The WWN Championship is a professional wrestling championship promoted by the WWNLive governing body. <SEP> Jay Dee "B.J." Penn (born December 13, 1978) is an American professional mixed martial artist and Brazilian Jiu-Jitsu practitioner.  Penn debuted and competed in the Ultimate Fighting Championship (UFC), and later in K-1.  Prior to fighting for the UFC, he became the first American Gold medalist of the World Jiu-Jitsu Championship.  In mixed martial arts, Penn has competed in the Featherweight, Lightweight, Welterweight, and Middleweight divisions.  As a former UFC Lightweight Champion and UFC Welterweight Champion, he is one of only three fighters in UFC history to win titles in multiple weight classes.  Penn was also a Co-champion in the UFC 41 Lightweight Tournament, due to an eventual draw opposite Caol Uno in the tournament finale.  Through his tenures as champion, Penn unofficially unified the UFC Lightweight Championship (against Sean Sherk) and broke the all-time lightweight title defense record.  Penn was inducted into the UFC Hall of Fame, as the inaugural inductee in the Modern-Era Wing by career-long rival Matt Hughes, during "International Fight Week" in July 2015. <SEP>  A professional MMA competitor since 2008, Riddle made a name for himself by appearing on SpikeTV's "The Ultimate Fighter 7", and went on to go on a four-fight win streak in the UFC before he was fired after testing positive for marijuana in February 2013.  In 2014, Riddle began training for a career in professional wrestling, and made his debut in February 2015. Matthew Fredrick "Matt" Riddle (born January 14, 1986) is an American professional wrestler and former mixed martial artist.  In 2016, readers of the "Wrestling Observer Newsletter" recognized him as the wrestling Rookie of the Year and the Most Improved wrestler of the year. <SEP> Daniel Jeffery Henderson (born August 24, 1970) is an American former mixed martial artist and Olympic wrestler, who last competed as a middleweight in the Ultimate Fighting Championship.  He was the last Strikeforce Light Heavyweight Champion and was the last Welterweight (80 kg ) and Middleweight (95 kg ) champion of Pride Fighting Championships.  Additionally, Henderson was the Brazil Open '97 Tournament Champion, the UFC 17 Middleweight Tournament Champion, the Rings: King of Kings 1999 Tournament Champion and the Pride Weltwerweight Grand Prix Tournament Champion.  During his career, Henderson also challenged for the UFC Middleweight Championship (2x), the UFC Light Heavyweight Championship and the Strikeforce Middleweight Championship.  He was the first mixed martial artist to concurrently hold two titles in two different weight classes in a major MMA promotion.  At the time of his retirement after UFC 204, he was the oldest fighter on the UFC roster.  Known to be one of the greatest mixed martial artists of all time having defeated a total of seventeen MMA world champions across four major MMA promotions (UFC, PRIDE FC, Strikeforce, and RINGS).