- Made acting debut at age 5 opposite Laurence Olivier in the TV-movie A Voyage Round My Father.
- Performed at his parents' Irish dance hall as a child.
- A member of Tom Hanks and Rita Wilson's Los Angeles Shakespeare Company.
- Pursued a pop-music career in the '90s, releasing three albums: Sean Maguire in '94, Spirit in '96 and Greatest Hits in '98.
- Ellie Maguire — Sister
- Katherine Maguire — Sister
- Darren Maguire — Brother
- Ciaran Maguire — Brother
- Michael Maguire — Brother
- Tanya Flynn — Wife
- Flynn Patrick Maguire — Son
Season 7, Episode 1
- Birth Name: Sean Martin Michael Maguire
- Birth Place: Ilford, Essex, England
- Birthday: April 18, 1976, Aries
- Profession: Actor, Singer