Namesakes
Fictional Characters from Television:
2 characters
John Maguire 1999 Time of Your Life 
Devan Maguire 2001 Crossing Jordan
Nobel Prize Winners:
1 peace
(peace) Mairead Maguire 1976
Notable Activists and Revolutionaries:
1 activist
(activist) Mairead Maguire 1944-
Notable Actors and Entertainers:
3 actors
Mickey Rooney (a.k.a. Maguire) 1920-2014
Tobey Maguire 1975-
Sean Maguire 1976-
Olympic Medalists:
1 bronze
(bronze) Emily Maguire 2012 field hockey