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On the season finale of "Who Do You Think You Are" Minnie Driver unraveled the truth about her father's double life. Minnie said her Dad was full of secrets and hid many things about his life ... so she looked into the lives of her grandparents to find out more.
Minnie Driver ancestry
Minnie Driver makes shocking discovery about her ancestry
WILL & GRACE -- '23' Episode 23 -- Air Date 05/08/2003 -- Pictured: (l-r) Sean Hayes as Jack McFarland, Minnie Driver as Lorraine Finster, Megan Mullally as Karen Walker -- Photo by: NBCU Photo Bank
UNITED STATES - MARCH 18: Minnie Driver (Photo by The LIFE Picture Collection/Getty Images)
LOS ANGELES, CA - AUGUST 25: Actress Minnie Driver arrives at the 66th Annual Primetime Emmy Awards at Nokia Theatre L.A. Live on August 25, 2014 in Los Angeles, California. (Photo by Gregg DeGuire/WireImage)
HOLLYWOOD, CA - MAY 01: Minnie Driver arrives at the Premiere of Lifetime Television's 'Return To Zero' at Paramount Theater on the Paramount Studios lot on May 1, 2014 in Hollywood, California. (Photo by Jerod Harris/Getty Images)
385873 06: Actresses Minnie Driver and Amanda De Cadenet attend the Matthew Williamson Fall/Winter collection 2001 February 19, 2001 in London, England. (Photo by Justin Goff/UK Press/Newsmakers)
387432 12: Actress Minnie Driver poses at the Toyota Pro/Celebrity Race during the 27th Annual Toyota Grand Prix of Long Beach April 7, 2001 in Long Beach, CA. (Photo by Chris Weeks/Liaison)
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BEVERLY HILLS, CA - JANUARY 23: Actress Minnie Driver and actor Josh Brolin attend the 57th Annual Golden Globe Awards on January 23, 2000 at the Beverly Hilton Hotel in Beverly Hills, California. (Photo by Ron Galella, Ltd./WireImage)
English actress and musician Minnie Driver. (Photo by Terry O'Neill/Getty Images)
WILL & GRACE -- '23' Episode 23 -- Air Date 05/08/2003 -- Pictured: Minnie Driver as Lorraine Finster -- Photo by: NBCU Photo Bank
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Minnie was poring through papers and said, "Wait a minute, he had a son! Dad had a brother!"
She added,"Oh my god! He was an actor! I'm so happy!"
The Emmy and Academy award nominee said she was tickled to find out she had an uncle and that he was an actor.
As Us Weekly notes, Minnie also discovered that her father saved the lives of others in World War Two and was awarded a medal ... though he never talked about that either and apparently, threw it away, saying he didn't deserve them.
According to The Daily Mail, the reason the 44-year-old star went on the show to find out more about her father's past, because of her 5-year-old, Henry.
"I want Henry to have a different experience that what I had," Minnie said. "Where I come from there are these big gaps and I would like to fill those gaps for him. I think it's powerful knowing where you come from."