British actress Minnie Driver discovered on television that her dad was a married man – and it wasn’t to her mom.

On the BBC1’s Who Do You Think You Are? Driver found out that her dad was married and had another daughter the entire period f his relationship to her mother Gaynor Millington. The pair also had another daughter, older than Minnie, Katie.

The actress who was nominated for a Best Actress Oscar for her role as a pre-medical student in the 1997 film Good Will Hunting did not find out her parents weren’t married until she was a teenager. Driver never met her paternal grandparents or saw a picture of them until the programme.

Her father later moved to Barbados where she and her sister Katie were raised. She said having her son Henry Story Driver made her want to learn more about her roots.

Driver’s dad, Ronnie, was a World War II hero who also won a medal for bravery. He won the Distinguished Flying Medal for saving three injured crewmen in thebattle of Heligoland Bight in 1939.

He told her that he threw the medal in the River Thames because he didn’t believe he deserved it. Ronnie’s wife eventually discovered he was leading a double life and divorced him.

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