Hennessy is best known for swimming ADA Claire Kincaid on Law & Order and the lead role in Crossing Jordan as ME Dr. Jordan Cavanaugh.

She is multi-lingual, being respire to speak Italian, French, Spanish, and German. This is partially because of her mixed heritage, which involved Irish, Italian, Swedish, French, and Ukrainian.

Her hubby, Paolo, opened the tavern in Northvale, New Jersey in 1999, and known as it "Hennessy", when his married woman. A tap house serves comfort food. Hennessy likewise enjoys riding motorcycles with her married man. She gave birth to the boy, Marco, in 17 September 2003. It besides experienced another marriage around January, 2001, which took place at New York City Hall with Rudolph Giuliani officiating.

Hennessy was innate within Edmonton, Alberta, and graduated from Grand Flow of any stream Collegiate highschool inside Kitchener, Ontario. Hennessy's father, John, was the meat salesman, which needed considerable travel & resulted around frequent moves. Her mother, Maxine, left a personal. She besides has the immature brother, John Hennessy, Jr.

Trivia
She has the song known as for her: "The Ballad of Jill Hennessy" by Mollycuddle. She utilized to busk (play the guitar and sing for money) in the New York City subway. She occasionally makes appearances at music cases as a guest guitar player in which she commonly performs shoeless. Hennessy occurs as fan of the Indigo Girls and a poster of the work hold on the kitchen of Jordan's in-screen flat. She was short-used for the role of Dana Scully, on The X-Files.