Currently lives in Denver, Colorado.
Enjoys gardening and golf.
Graduated from Amesbury High School in Amesbury, Massachusetts. Attended University of Massachusetts-Amherst and Bridgewater State College in Massachusetts. Graduated from New York University's Graduate Acting Program, where he received an MFA.
Has admitted in interviews that he grew up very poor.
Has studied martial arts for over twenty years and has a black belt in Shotokan karate. Has six years of experience in Brazilian jujitsu and Aikido, and is a certified SCUBA diver.
He has Irish, Scottish, and French-Canadian ancestry. His maternal grandparents were born in Canada; his grandfather was from Prince Edward Island, and his grandmother was from Tracadie, New Brunswick.
Plays "Michael Westen" on Burn Notice (2007), performed with actor Michael Weston in Final Draft (2003).
A big fan of the Boston Red Sox.
Engaged to model Michelle Woods [June 25, 2012].
Jeffrey and his wife, Michelle Woods, became the parents of their first child, a daughter [December 18, 2012].
In Amesbury, Massachusetts receiving an award at his former high school, Amesbury High. [May 2009]
His uncle, Don Matthews, worked as a coach in the CFL (Canadian Football League). Don was the brother of Jeffrey's mother, Nancy Matthews.
He and Michelle have 3 children: Girl (Claire, 2012), Boy (Lucas, 2014), Girl (2017).
He has portrayed both John F. Kennedy and Robert F. Kennedy.
He is a lifelong Democrat.