The President's House in Philadelphia was the third U.S. Presidential Mansion. George Washington occupied it from November 27, 1790 to March 10, 1797, and John Adams occupied it from March 21, 1797 to May 30, 1800. Philadelphia served as the national capital from 1790 to 1800 while Washington, D.C. was under construction. Revolutionary War financier and fellow Founding Father Robert Morris then owned the mansion, and gave the House to President Washington. Washington brought nine enslaved Africans from Mount Vernon to work in his presidential household.