William Duncan - philosopher - died in 1760.
William Duncan - philosopher - was born in 1717.
William Barrett - philosopher - died in 1992.
William Wallace - philosopher - died in 1897.
William Duncan - missionary - died in 1918.
William Wallace Duncan died in 1908.
William Augustine Duncan died in 1885.
William Duncan Herridge died in 1961.
William fitz Duncan died in 1147.
William Duncan MacMillan died in 1948.
William Duncan Strong died in 1962.
William Henry Duncan died in 1863.
William Dow Duncan died in 1961.