Ruehl was born in New York City to Mercedes J. Ruehl, a schoolteacher, and Vincent Ruehl, an
FBI agent. His father was of German and Irish descent and his mother was of Cuban and Irish descent. The family frequently moved during his childhood owing to Vincent Ruehl's assignments with the FBI, and lived in other states including
Silver Spring, Maryland. He and his sister,
Mercedes (who became an Academy Award-winning actress), were raised Catholic. Ruehl was educated at
Gonzaga College High School in Washington, D.C., and later moved to
Annapolis. He studied at the
University of Maryland and worked as a court reporter for
The Baltimore Sun. ==Family and personal life==