Born on July 29th in Columbus, Ohio. Radnor graduated from Bexley High School in Columbus. Radnor now lives in Los Angeles. He is a graduate of Kenyon College (Alma Matter of other entertainment greats such as Paul Newman, Allison Janney, and comic strip artists Jim Borgman and Bill Watterson) receiving his M.F.A. from NYU's Tisch School of Arts.
His stage credits include "The Graduate," and appearances at The Manhattan Theater Club, the Vineyar Theater, and The Blue Light Theatre Company.
His father is a litigation attorney in Columbus, Ohio.