Aaron Staton is an American actor. His acting career started in the mid-2000s. His first recurring role was as Daniel in the series 7th Heaven. He later made his first movie role in Descent. He later became known for his role as Ken Cosgrove in the critically acclaimed series Mad Men. He was on the show until its finale in 2015. During this period, he also had roles in the films The Nanny Diaries and August Rush. After Mad Men ended, he played Greg Donellen in Ray Donovan. His next role was as JD in the short-lived series Girlfriends’ Guide to Divorce. He’s also appeared in five episodes of the show My Mother and Other Strangers.