Angelina Jolie, Brad Pitt and his family donated $1 million to a Missouri hospital over the weekend.

Brad's bro, Doug, announced the generous contribution to St. John's Hospital in his hometown of Springfield Saturday. The money will establish an endowment fund to pay children's cancer specialists, the Springfield News-Leader reports.

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The hospital's cancer treatment unit will be renamed the Jane Pitt Pediatric Cancer Center, in honor of Brad's mom, who is passionate about children's issues.

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Once completed this summer, St. John's Hospital will become one of six affiliates of the St. Jude's Children's Research Hospital (one of Jennifer Aniston's favorite charities). The endowment fund will also go toward building a new pediatric unit, a 10-bedroom hospital-based Ronald McDonald house and doubling the size of the neonatal and pediatric intensive care units.

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St. John's is matching the $1 million donation to help fund the expansion.