A Brunswick man died Saturday afternoon when his motorcycle struck a guardrail in Liverpool Township in Medina County.The State Highway Patrol said Sunday that Vaughn D. Thiery III, 46, was driving south on Columbia Road, just south of Myrtle Hill Road, when his 1998 red Harley-Davidson motorcycle hit a guardrail on the right side of the road.Thiery was ejected from his motorcycle, which skidded to a stop in the road.The accident occurred at 4:06 p.m.