Gregory Sean O'Brien, October 23,1969-July 24, 2021.  Loving husband of Hengxi O'Brien, devoted father of Darrin and Claire O'Brien, beloved son of Stuart and Helena O'Brien, and sister Michelle Gustin, brother in law Andrew Gustin, and niece Whitney Oickle, and nephew Clayton Gustin.  Greg enjoyed exploring other cultures, which led him to many adventures abroad.  He was an avid windsurfer and scuba diver. His favorite place was anywhere close to the ocean. He left us much too soon. May he rest in peace.  In lieu of flowers, donations may be made at : https://gofund.me/5f0bcf71 Greg O'Brien's Memorial Fundraiser.