Competitive Wresling dates back to at least the Original Olympic Games in Athens, Ancient Greece. Another Ancient versions of Wrestling is Sumo (Japan). Modern versions include Olympic (Greco-Roman), WWE (American), Lucha Libre (Mexico), and indeed also Mud Wrestling (England) and Jelly Wrestling (Ireland).
WWE World Wrestling Entertainment
World Wrestling Entertainment is the Modern American made-for-TV version of wrestling.
Picture credit:  Becky Lynch WWE Facebook (2020) Photo, January 21, 2020 [Internet] Available from: https://scontent-dub4-1.xx.fbcdn.net/v/t1.0-9/p960x960/83001548_2496579183941929_2963653989746343936_o.jpg?_nc_cat=111&_nc_ohc=W6fCHcHC8QQAX-8Ppo8&_nc_ht=scontent-dub4-1.xx&_nc_tp=6&oh=bcae12c1ab5debedd9ee7a1af08ac971&oe=5EC9334D [Accessed 1 February 2020]
Irish Amateur Wrestling Association
Olympic Wrestling is the version which dates back to Ancient Greece and Rome and the original Olympic Games. It is the version in the Modern Olym;pics also.
Irish Amateur Wrestling Association Events:
Irish Open (Years): 2019
Dublin Freestyle Open (Years): 2019
Picture Credit:  Irish Amateur Wrestling Association (2019) about_us [Internet] Available from: https://www.irishwrestling.ie/img/about_us.jpg [Accessed 23 November 2020]
Sumo World Championships
John Gunning was the first Irishman to compete in the Sumo World Championships for Ireland.
Irish International Sumo Wrestlers
I have it on the authority of John Gunning that this Referece website is one of the best ever. The German who compiled it went through over 100 years of Japanese Newspapers. It cnntains the results of every Japanese Sumo bout ever recorded back to early 1900s or before.
Sumo Reference: http://sumodb.sumogames.de/
 Irish Independent (2019) John Gunning [Internet] Available from: https://cdn-02.independent.ie/life/d5719/38510314.ece/AUTOCROP/w620/2019-09-21_lif_53264469_I3.JPG [Accessed 1 February 2020]