He helped write the Bill of Rights. Now his slave quarters will be renovated.

Homes of slaves who served President James Madison at his Montpelier estate in Virginia will be rebuilt for the first time over the next five years, along with other refurbishments to the home of one of the nation's Founding Fathers, thanks to a $10 million gift announced Saturday.

David Rubenstein, a leading Washington philanthropist and history buff, pledged the $3.5 million needed to rebuild the slave quarters next to the mansion in the foothills of the Blue Ridge Mountains. Another $6.5 million will be devoted to refurnishing parts of the home where Madison drafted ideas that would become the U.S. Constitution and the Bill of Rights.