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STRATFORD, LONDON, England – Prince William rarely speaks about the death of his mother Princess Diana, but he thought it might help a 9-year-old girl he met at a London charity.

Aoife lost her father to pancreatic cancer, and is still grieving about his death.

William sat with the little girl and told her about how he lost a parent.

“You know I lost my mummy when I was very young too. I was [15] and my brother was 12. So we lost our mummy when we were young as well.”

“Do you speak about your daddy? It’s very important to talk about it. Very, very important.”

He also told children at the Centre that he felt very angry when his mother died, and stressed again how important it is for them to talk about it. “Sometimes it hurts but we can remember the happy things too. It is so important to talk.”

LONDON, ENGLAND - JANUARY 11: Prince William, Duke of Cambridge speaks to Aoife, 9, during his visit to a Child Bereavement UK Centre in Stratford on January 11, 2017 in London, England. (Photo by Matt Dunham - WPA Pool/ Getty Images)

LONDON, ENGLAND - JANUARY 11: Prince William, Duke of Cambridge speaks to Aoife, 9, during his visit to a Child Bereavement UK Centre in Stratford on January 11, 2017 in London, England. (Photo by Matt Dunham - WPA Pool/ Getty Images)

LONDON, ENGLAND - JANUARY 11: Prince William, Duke of Cambridge speaks to Aoife, 9, during his visit to a Child Bereavement UK Centre in Stratford on January 11, 2017 in London, England. (Photo by Matt Dunham - WPA Pool/ Getty Images)

Prince William is the royal patron of the Child Bereavement U.K. Centre, a charity that helps families deal with loss. It was founded by one of Princess Diana’s closest friends .

The Duke and Duchess find out how the @cbukhelp 'Memory Jar' exercise can help families dealing with bereavement pic.twitter.com/H5RpEmmCcT — Kensington Palace (@KensingtonRoyal) January 11, 2017

This coming summer will mark 20 years since Princess Diana died in a car accident in Paris.

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