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Look Who's Irish!
Will Christina Aguilera, Emilio Estevez, and Barack O'Bama be celebrating St. Patrick's Day this year? See 16 stars with surprising Irish ancestry.
Jennifer Graylock / AP Photo
Robert De Niro
Jennifer Graylock / AP Photo
Lindsay Lohan
Joel Ryan / AP Photo
Emilio Estevez
Jorge Herrera
Barack Obama
J. Scott Applewhite / AP Photo
Christina Aguilera
Chris Pizzello / AP Photo
Harrison Ford
Junko Kimura / Getty Images
Alicia Keys
Dan Steinberg / AP Photo
Ben Stiller
Charles Sykes / AP Photo
Ana Ortiz
Retna
John Travolta
Jason Merritt / Getty Images
John Stamos
Walter McBride / Retna
Gwen Stefani
Carlos Diaz / Retna
Marlon Brando
AP Photo
Janeane Garofalo
Graham Jepson / Retna
Henry Louis Gates Jr.
PBS
