Belle Grove is a historic plantation located on U.S. Route 301 in Port Conway, Virginia. The present plantation house was built in 1790. James Madison, a Founding Father and the fourth President of the United States, was born on March 16, 1751, at Belle Grove plantation in an earlier house which no longer stands. Belle Grove plantation was also the childhood home of his mother, Eleanor Rose "Nellie" Conway. Her father Francis Conway was the namesake for Port Conway. On April 11, 1973, Belle Grove was added to the National Register of Historic Places.