There is no readily available information regarding Jay Hieron’s siblings. He has not revealed any identifying information regarding whether he has siblings or not.
Jay Hieron is an American actor, stuntman and former mixed martial artist who has competed for the Los Angeles Anacondas and competed in the UFC, WEC, Affliction, Strikeforce, and Bellator.
Jay Hieron was the final IFL Welterweight Champion. On March 7, 2014, Jay Hieron announced his retirement from MMA competition.
James Thomas Hieronymus was born on July 29, 1976, in Freeport, New York, United States of America. Jay Hieron is a two-time state wrestling championship runner-up at Freeport (N.Y.) High School.
Jay Hieron was a National Junior College Champion at Nassau (N.Y.) Community College, where he earned an associate degree. Hieron later attended Hofstra University.
Jay Hieron faced Tyron Woodley on February 2, 2013, at UFC 156. However, he lost the fight KO (punches) in round 1 and was released from the promotion.