By Denny Dyroff, Entertainment Editor, The Times Nathan Gray and the iron Roses Nathan Gray, who will headline a show at MilkBoy Philly (1100 Chestnut Street, Philadelphia, 215- 925-6455, www.milkboyphilly.com) on March 18, has been the front man for several well-received bands including BoySetsFire, I am Heresy and The Casting Out. Gray’s arrival was in 1994 as the singer for BoySetsFire, a post-hardcore...