He's a loving husband.
Emerson met his wife, Carrie Preston, in 1994 in Alabama. At the time, he was pursuing his master's degree at the Alabama School of Fine Arts, and Preston was acting in the Alabama Shakespeare Festival. The two bonded over their love of theater, and they've been together ever since.
You may remember that Preston guest-starred in Person Of Interest as Finch's one and only love. How romantic!